statistical methods in research ppt

Statistical methods are essential for scientific research. Statistical Methods. PPT Describing and Presenting Data - shsu.edu To quantitatively introduce probability concepts, In its simplest, idealized form, the random walk, as in the figure above A drunk starts out from, Each step he takes is of equal length l. The man, direction of each step (right or left) is, preceding step. STATISTICAL PROCEDURES (Discriptive Statistics).pptx MuhammadNafees42 158 views Sampling design 6.5k views Method of data collection Research problem Balaji P Balaji P Balaji P Balaji P 33k views Use of quantitative techniques in economics Balaji P Recently uploaded 265.ppt sanjaykj6 Apple 2022-Q4 Income Statement chart.pdf BobKane13 RESEARCH (PART 1 (Ensemble the French word for assembly). # $ % & ' ( ) * + , - . Weve updated our privacy policy so that we are compliant with changing global privacy regulations and to provide you with insight into the limited ways in which we use your data. Introduction Observational Data Descriptive statistics involve summarizing a collection of data. JMCON. Tap here to review the details. For the, Again note that ltn1gt Np. GEOG: 3000- Advanced Geographic Chapter I:Introduction MIS 542 2014/2015 Fall, - Chapter I:Introduction MIS 542 2014/2015 Fall, Statistics: A Gentle Introduction By Frederick L. Coolidge, Ph.D. Sage Publications, - Statistics: A Gentle Introduction By Frederick L. Coolidge, Ph.D. Sage Publications Chapter 1 A Gentle Introduction Chapter 1*, UCLA STAT 13 Introduction to Statistical Methods. (n1, Question 1 What is the mean number of steps to, We can do this sum by looking it up in a table OR. Presentation Transcript. The type of data defines: The summary measures used Mean, Standard deviation for continuous data Proportions for discrete data Statistics used for analysis: Examples: T-test for normally distributed continuous Wilcoxon Rank Sum for non-normally distributed continuous, Descriptive Statistics Characterize data set Graphical presentation Histograms Frequency distribution Box and whiskers plot Numeric description Mean, median, SD, interquartile range, HistogramContinuous Data No segmentation of data into groups, Frequency Distribution Segmentation of data into groups Discrete or continuous data, Box and Whisker Plots Popular in Epidemiologic Studies Useful for presenting comparative data graphically, Numeric Descriptive Statistics Measures of central tendency of data Mean Median Mode Measures of variability of data Standard Deviation Interquartile range. Research Scholar at Indian Institute of Technology, Madras. 3. Our new CrystalGraphics Chart and Diagram Slides for PowerPoint is a collection of over 1000 impressively designed data-driven chart and editable diagram s guaranteed to impress any audience. Chapter 2 - Summary. methods research methods quantitative methods qualitative methods mathematical statistical methods interviews structured semi structured Download Presentation Research Methods An Image/Link below is provided (as is) to download presentation allen s chapter 7 j&m s chapters 8 and 12. statistical methods. Qualitative Vs. Quantitative Research A step-wise guide to conduct research. or the 2nd Moment of P(u) about the mean. Our product offerings include millions of PowerPoint templates, diagrams, animated 3D characters and more. Test to compare two means (independent) Test to compare two means (paired) Test to compare two proportions. {k68vX o F?5z[gfA)aU[x[~z ^SK&Kamis~ [] 5okev{\-p5}a0Ly O/;]/nEQ)Rllp.k$n-w87[W n)f3}u=[`9cf UhsH-"A Walker, Glenn A., and Jack Shostak. The probability of not making a Type II error is 1 - , which is called the power of the test. (n1 0?N) N!/(n1! A measure of the precision of a sample in estimating the population parameter. Forget the drunk, lets get back to Physics! 63^*6oFhdBXP6mkw P_(axEknr_F.VpH^oEB~,xF.Yxl8goKNst=vq~A($rVqg$rQ/$K7v-yG_I/G?WyOKTk3QyIYzp-V^XtwR>sgZa~'C]A|#Ho52;ndYF{Z'#*h 0t`s?gai4 VUsB9. Statistical Methods in Clinical Trials - . We focus on methods in eight areas of statistical research and maintain expertise in each. For example, suppose we measure the weight of 100 patients in a study. Use a Statistical description of such a system. The SlideShare family just got bigger. Introduction to Statistical Computing in Clinical Research - . B^uuhm?}{].~}v_J;xogJY]@.)oqC? (PDF) Use of Statistics in Research Chapter 1: Introduction to Statistical Methods Description: . STATISTICS IN - PowerPoint PPT presentation Number of Views: 637 Avg rating:3.0/5.0 Slides: 67 Provided by: Charles7 large data, Statistical Methods - . Free access to premium services like Tuneln, Mubi and more. Table of contents Methods for collecting data Examples of data collection methods Methods for analyzing data Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. Overview. gordon c. nagayama hall 355 straub phone: 346-4969 e-mail: Clinical Research Methods - . If it appears they are not from same population, cant tell which sample is different. (3).pdf, Advanced Python Skills for Data Scientists, No public clipboards found for this slide, Enjoy access to millions of presentations, documents, ebooks, audiobooks, magazines, and more. Learn faster and smarter from top experts, Download to take your learnings offline and on the go. a large study dooms you to statistical significance Anonymous Statistician. x d P xuKAs b*Q0*9" (#D4FhgcZ;bg*sF"q][m\D Dt+a]|a#lsn8,3_:?i5jrWydw #T iv^\s'fRf9/j&&vFs7nKS"_EGiIC-JK|T7{E?cxgM/(+Q1gKzehH}O'4iUA3Mc+2c~zK|{} Dvk9/ @ H | xcdd``> @c112BYL%bpu. Standard Error A fundamental goal of statistical analysis is to estimate a parameter of a population based on a sample The values of a specific variable from a sample are an estimate of the entire population of individuals who might have been eligible for the study. continuous data. We've updated our privacy policy. Whatever your area of interest, here youll be able to find and view presentations youll love and possibly download. data analysis techniques and statistical softwares. Statistical research is the rigorous development of improved or new statistical methods grounded in probability and statistical theory. Most commonly used in assessing the estimate of the difference between two groups. Ratio of two interval data points has no meaning Temperature in celsius, day of the year). Explanatory & Response Variable in Statistics A quick guide for early career researchers! - Chapter 7 Sampling and Sampling Distributions Simple Random Sampling Point Estimation Introduction to Sampling Distributions Sampling Distribution of Sampling - Statistics 202: Statistical Aspects of Data Mining Professor David Mease Tuesday, Thursday 9:00-10:15 AM Terman 156 Lecture 12 = More of Chapter 5, Chapter 1: Introduction and Research Methods. Looks like youve clipped this slide to already. NOTE that lt(?u)2gt 0 if only if ui u for, It can easily be shown that, lt(?u)2gt 0, or, We could also define the nth moment of P(u) about, This is rarely used beyond n 2. ? Cathy Walker. Standard error measures the precision of the estimate of a population parameter provided by the sample mean or proportion. It appears that you have an ad-blocker running. It appears that you have an ad-blocker running. Sample Median Used to indicate the average in a skewed population Often reported with the mean If the mean and the median are the same, sample is normally distributed. ? Winner of the Standing Ovation Award for Best PowerPoint Templates from Presentations Magazine. u " PowerShow.com is brought to you byCrystalGraphics, the award-winning developer and market-leading publisher of rich-media enhancement products for presentations. - Chapter 10: Inference from Small Samples Introduction When the sample size is small, the estimation and testing procedures of Chapter 8 are not appropriate. Power is the ability of a study to avoid a Type II error. You can read the details below. If so, share your PPT presentation slides online with PowerShow.com. > g Now customize the name of a clipboard to store your clips. cocke-kasami-younger parsing algorithm: Statistical methods in NLP - . We had, m n1 n2 2n1 N. So, ltmgt 2ltn1gt, ?m m - ltmgt (2n1 N) (2ltn1gt - N) 2(n1, (?m)2 4(?n1)2. Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. The dependent variable is always the property you are trying to explain; it is always the object of the research. You can read the details below. With respect to use of research methodology, quantitative approach (78%) is popular in user studies followed by mixed methods (10%), qualitative (8%), and multimethod (4%). 3rd edition. Chapter 1 Introduction. We've updated our privacy policy. The Statistics and Methods Core supports CCPR research and training by providing expertise in the choice, development, and implementation of statistical methodology. It is the middle value from an ordered listing of the values If an odd number of values, it is the middle value If even number of values, it is the average of the two middle values. / 0 1 2 3 4 5 6 7 8 9 : ; = > ? ADVANCED STATISTICAL METHODS IN AGRICULTURAL RESEARCH - . strongly agree, agree, neither agree or disagree, etc. They are all artistically enhanced with visually stunning color, shadow and lighting effects. PPT - Introduction to Statistical Analysis PowerPoint Presentation Types of Data Discrete Data-limited number of choices Binary: two choices (yes/no) Dead or alive Disease-free or not Categorical: more than two choices, not ordered Race Age group Ordinal: more than two choices, ordered Stages of a cancer Likert scale for response E.G. Here, you can use descriptive statistics tools to summarize the data. course overview course. Now customize the name of a clipboard to store your clips. Sometimes, u is called the 1st moment of P(u). descriptive statistics inferential statistics. Activate your 30 day free trialto continue reading. Looks like youve clipped this slide to already. @ n ? " What is the mean displacement, ltxgt ltmgtl? Many of them are also animated. Data presentation. Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. Li leads a research group called the Junction of Statistics and Biology, where she and her students focus on developing statistical and computational methods to answer important questions in biological and biomedical sciences and to extract key information from genomics and health-related data. Looks like youve clipped this slide to already. We've updated our privacy policy. Sampling.ppt - Google Slides PPT - Statistical Methods PowerPoint Presentation, free download - ID A P value provides only a probability that estimate is due to chance A P value could be statistically significant but of limited clinical significance. STATISTICAL TOOLS NEEDED - PowerPoint PPT Presentation Talk about Probabilities Average Properties, We are NOT concerned with the detailed behavior, An Isolated System is in Equilibrium when its, But, note! Large data sets (Corpora) of natural languages allow using statistical methods that were not possible before Brown Corpus includes about 1000000 words with POS Uploaded on Jan 02, 2020 Kimberly A Buchanan + Follow probabilities 5 chance estimating probabilities lexical categories large data sets flies 21 44 0 Also called the error. Also called a error. Zhi Chen - Milwaukee, Wisconsin, United States - LinkedIn Princy Francis M need to solve 1023, Quantum Schrdingers Equation ?? Sample size for proportions Stata input: Mean 1 = .2, mean 2 = .3, = .05, power (1-) =.8. T value = difference between means standard error of difference T value then looked up in Table to determine significance, Paired T Tests Uses the change before and after intervention in a single individual Reduces the degree of variability between the groups Given the same number of patients, has greater power to detect a difference between groups. PPT - Research Methods PowerPoint Presentation, free download - SlideServe Statistical methods - Latest research and news | Nature Do not sell or share my personal information, 1. Then you can share it with your target audience as well as PowerShow.coms millions of monthly visitors. - Chapter 15: Likelihood, Bayesian, and Decision Theory AMS 572 Group Members Yen-hsiu Chen, Valencia Joseph, Lola Ojo, Andrea Roberson, Dave Roelfs, - Chapter 1 Section 1 Introduction to the Practice of Statistics. Typically 0.05 is used, Errors Type II error Claiming there is no difference between two samples when in fact there is. PPTX REACH Resources | Informing more effective humanitarian action Now customize the name of a clipboard to store your clips. BIOS:6610 STATISTICAL METHODS IN CLINICAL TRIALS - . Medical Statistics Made Easy, Correlation Perfect Correlation Source: Altman. Systematic Random Sampling is a method of probability sampling in which the defined target population is ordered and the sample is selected according to position using a skip interval.. It appears that you have an ad-blocker running. Spies M.D., MPH Professor of Radiology Georgetown University School of Medicine Washington, DC, Overview Data types Summarizing data using descriptive statistics Standard error Confidence Intervals, Overview P values One vs two tailed tests Alpha and Beta errors Sample size considerations and power analysis Statistics for comparing 2 or more groups with continuous data Non-parametric tests, Overview Regression and Correlation Risk Ratios and Odds Ratios Survival Analysis Cox Regression, Further Study Medical Statistics Made Easy M. Harris and G. Taylor Informa Healthcare UK Distributed in US by: Taylor and Francis 6000 Broken Sound Parkway, NW Suite 300 Boca Raton, FL 33487 1-800-272-7737. Analysis of Time Series Data 9.1 Basic concepts 9.2 General model formulations 9.3 Smoothing methods 9.4 OLS regression models 9.5 Stochastic time series CHAPTER 2 Research Methods in Industrial/Organizational Psychology. ; The sampling interval, i, is determined by dividing the population size N by . Free access to premium services like Tuneln, Mubi and more. Statistics in research - SlideShare Statistical Methods - SlideShare Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. This course The Physics of systems containing, Classical Newtons Laws ?? By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. Free access to premium services like Tuneln, Mubi and more. P Values and Confidence Intervals P values provide less information than confidence intervals. February 13, 2010. 1994. page 99 63 Tips 6 (b) P-value vs. 95CI (4) Adapted from Armitage, P. and Berry, G. Statistical methods in medical research. The Probability of an occurrence of a particular, Example In throwing a pair of dice, we can give, Note that this probability depends strongly on. Brief description about Descriptive statistics for dummies with solved examples. Statistical Methods in Clinical Research. - Chapter 8: Introduction to Find the lower and upper confidence limits. Non-parametric Tests Testing proportions (Pearsons) Chi-Squared (2) Test Fishers Exact Test Testing ordinal variables Mann Whiney U Test Kruskal-Wallis One-way ANOVA Testing Ordinal Paired Variables Sign Test Wilcoxon Rank Sum Test. The probability of stepping to, to the left is q 1 p. In general, q ? PPT - Applications of Statistics in Research PowerPoint Presentation In doing so, the statistician seeks to limit bias, maximize objectivity, and obtain results that are scientifically valid. In inferential statistics, we are generally using a sample. Research Method.ppt - SlideShare Activate your 30 day free trialto unlock unlimited reading. Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. Statistical Tests Parametric tests Continuous data normally distributed Non-parametric tests Continuous data not normally distributed Categorical or Ordinal data, Comparison of 2 Sample Means Students T test Assumes normally distributed continuous data. Sample size calculation yields the number of study subjects needed, given a certain desired power to detect a difference and a certain level of P value that will be considered significant. Comparative descriptive survey research design was employed to answer the research questions raised. You might even have a presentation youd like to share with others. Teaching Assistants: Katie Tranbarger & Scott Spicer, Y or unravel reasons/causes of - MAS1401 Statistical Methods An Introduction to Statistical Methods used in the Agricultural and Biological Sciences Lecturer: Dr David Walshaw School of Mathematics Statistics 202: Statistical Aspects of Data Mining, - Statistics 202: Statistical Aspects of Data Mining Professor David Mease Tuesday, Thursday 9:00-10:15 AM Terman 156 Lecture 13 = Finish Chapter 5 and Chapter 8, - Title: CHAPTER 6: LINEAR PROGRAMMING Author: chen_zhimin Last modified by: user Created Date: 10/20/2004 1:00:08 PM Document presentation format. So, lt(?m)2gt 4lt(?n1)2gt, Summary 1 Dimensional Random Walk Problem, Probability Distribution is Binomial WN(n1), Mean number of steps to the right ltn1gt Np. 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Test to Compare Two Population Variances. It's FREE! PDF Introduction & Basics Is the most common value More frequently used to describe the distribution of data Uni-modal, bi-modal, etc. Example: A company advertises the net weight of its cereal is 24 ounces. course overview course, Introduction to Statistical Computing in Clinical Research - . Research & Expertise - Missing Data & Observational Data Modeling Methods - Record Linkage & Machine Learning Methods The P value used is an arbitrary value P value of 0.05 equals 1 in 20 chance P value of 0.01 equals 1 in 100 chance P value of 0.001 equals 1 in 1000 chance. The application of statistical methods extracts information from . ERIC - EJ1051853 - A Comparative Study on Power Point Presentation and Basics stat ppt-types of data Farhana Shaheen 23.3k views Null hypothesis AND ALTERNAT HYPOTHESIS ADESH MEDICAL COLLEGE 53.5k views Presentation of data Ruby Ocenar 256k views Research Design gaurav22 401.8k views Standard deviation P. G. Department of Botany, Berhampur University 82.6k views Chi squared test Dhruv Patel 6.4k views - Chapter 1: Introduction and Research Methods What is Psychology? Statistical Issues Designing Clinical Research - . We've encountered a problem, please try again. Hidden error because cant be detected without a proper power analysis. We've encountered a problem, please try again. The mean value of the deviation from the mean, Now, lets look at (?u)2 (u - ltugt)2 (square of, Its mean value is lt(?u)2gt lt(u - ltugt)2gt, ltu2gt - 2ltugtltugt (ltugt)2 ltu2gt - (ltugt)2, This is called the Mean Square Deviation (from. Very helpful- In analysis of height and weight, for a known height, one can predict weight. A very large study might find that a difference of .1 on a VAS Scale of 0 to 10 is statistically significant but it may be of no clinical significance A large study might find many significant findings during multivariable analyses. Sample Size Calculation Depends on: Level of Type I error: 0.05 typical Level of Type II error: 0.20 typical One sided vs two sided: nearly always two Inherent variability of population Usually estimated from preliminary data The difference that would be meaningful between the two assessment arms. The SlideShare family just got bigger. gordon c. nagayama hall 355 straub phone: 346-4969 e-mail: gnhall@darkwing.uoregon.edu. Clipping is a handy way to collect important slides you want to go back to later. (n1 0?N) N!/(n1!n2! But m 2n1 N, so n1 ()(N, n2 N - n1 ()(N - m). PPT A Brief Introduction to Research - University of Virginia School of With so many measurements, simply looking at the data fails to provide an informative account. Well convert it to an HTML5 slideshow that includes all the media types youve already added: audio, video, music, pictures, animations and transition effects. PPT Basics of Statistics PowerShow.com is a leading presentation sharing website. 3. This may lead to a negative study outcome in error. Interquartile range Is the range of data from the 25th percentile to the 75th percentile Common component of a box and whiskers plot It is the box, and the line across the box is the median or middle value Rarely, mean will also be displayed. Research Methods and Statistics - PowerPoint PPT Presentation - PowerShow The sample is chosen by selecting a random starting point and then picking every i th element in succession from the sampling frame. The four types of statistical methods and the - ResearchGate Example: A relative risk of 4 might have a confidence interval of 1.05 to 9, suggesting that although the estimate is for a 400% increased risk, an increased risk of 5% to 900% is plausible. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. STATISTICAL ANALYSIS If O(u) is any function of u, the mean value of, Some simple mean values that are useful for, This is a measure of the central value of u, Consider the quantity ?u u - u (deviation from, ? Analysis of Variance Used to determine if two or more samples are from the same population- the null hypothesis. The PowerPoint PPT presentation: "Chapter 1: Introduction to Statistical Methods" is the property of its rightful owner. Click here to review the details. PPT - Overview Biostatistics Applications of Statistics in Research This analysis doesnt take into. (Pearsons) Chi-Squared (2) Test Used to compare observed proportions of an event compared to expected. I can advise you this service - www.HelpWriting.net Bought essay here. The aim of this study was to compare PPT and traditional lecture method in material understandability, effectiveness and attitude among university students. Statistics by Statistical Research and Training Center Philippine Statistical Association , Inc. (Power point presentation on the different concepts of Statistics) Elementary Statistics by Yonardo A. Gabuyo et. Sz_]WMi4}S:4c_KC%. Two main statistical methods are used in data analysis: descriptive statistics, which summarizes data using indexes such as mean and median and another is inferential statistics, which draw conclusions from data using statistical tests such as student's t-test. Clinical Research Methods - . The function of statistics in research is to purpose as a tool in conniving research, analyzing its data and portrayal of conclusions there from. Research Scholar - HNB Garhwal Central University, Srinagar, Uttarakhand. Statistical methods rcm business 2.3k views 34 slides Basics stat ppt-types of data Farhana Shaheen 23.3k views 35 slides Introduction to statistics akbhanj 31k views 18 slides Spss an introduction Suresh Thengumpallil 12.1k views 25 slides Data Ashutosh Mittal 26.8k views 45 slides 1.2 types of data Long Beach City College 1.8k views Ratios: if CI includes 1, then is not significant The interval contains the true population value 95% of the time. UCLA STAT 13. Can be ratio Ratio of the measures has meaning Weight, height, Types of Data Why important? Statistical methods assist in classification in four ways: in devising probability models for data and classes so that probable classifications for a given set of data can be identified; in developing tests of validity of particular classes produced by a classification scheme; in comparing different classification schemes for effectiveness; and Use of emergent design utilizing constant comparison and revision. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. dev. When the sample size is small, the estimation and testing procedures of Chapter 8 are not appropriate. So, the relative, ? When comparing two samples, we usually cannot be sure which is going to be be better. Data types Summarizing data using descriptive statistics Standard error Confidence Intervals. - Enago.tw | Reviso de Texto- Enago.com.br | Ingilizce Dzenleme- Enago.com.tr, Copyright 2023 - ALL RIGHTS RESERVED | Privacy Policy | Terms & Conditions | Contact Us. 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