Each step is of length, axis must be x ml where m a positive or a, Question After N steps, what is the probability. We focus on methods in eight areas of statistical research and maintain expertise in each. then given by the fraction of these experiments in which two . 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. Practical Statistics for Medical Research, Correlation Correlation Coefficient .3 Correlation Coefficient 0 Source: Altman. Research Scholar at Indian Institute of Technology, Madras. Brief description about Descriptive statistics for dummies with solved examples. The Statistics and Methods Core supports CCPR research and training by providing expertise in the choice, development, and implementation of statistical methodology. Overview. Zhi Chen Civil Engineering PhD with great quantitative analysis skills actively seeking for a data scientist/analyst position By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. Clipping is a handy way to collect important slides you want to go back to later. Chapter 2 - Summary. The goal of statistics is to help researchers organize and interpret the data. ADVANCED STATISTICAL METHODS IN AGRICULTURAL RESEARCH - . 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Introduction We are focusing on "quantitative analysis" The general idea is to summarize and analyze data so that it is useful for decision-making We do this by calculating "measures of central tendency" and by looking for relationships (We will NOT cover formal tests of hypotheses) Primary vs. secondary data sources Data on uses For qualitative data, you can use methods such as thematic analysis to interpret patterns and meanings in the data. For quantitative data, you can use statistical analysis methods to test relationships between variables. This course The Physics of systems containing, Classical Newtons Laws ?? 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. ? course overview course. Now customize the name of a clipboard to store your clips. types of data. Get powerful tools for managing your contents. The probability of not making a Type II error is 1 - , which is called the power of the test. UCLA STAT 13. Well convert it to an HTML5 slideshow that includes all the media types youve already added: audio, video, music, pictures, animations and transition effects. cocke-kasami-younger parsing algorithm: Statistical methods in NLP - . And, best of all, it is completely free and easy to use. Statistics presents a rigorous scientific method for gaining insight into data. ? Practical Statistics for Medical Research, Correlation Correlation Coefficient .7 Correlation Coefficient -.5 Source: Altman. (Ensemble the French word for assembly). What is the mean displacement, ltxgt ltmgtl? 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. Overview. 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. And theyre ready for you to use in your PowerPoint presentations the moment you need them. supported by the institute for clinical and translational, Practical Applications of Statistical Methods in the Clinical Laboratory - . By accepting, you agree to the updated privacy policy. They'll give your presentations a professional, memorable appearance - the kind of sophisticated look that today's audiences expect. 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. Tap here to review the details. For the, Again note that ltn1gt Np. The unit staff provide advice about what to do and how to do it as well as . Our product offerings include millions of PowerPoint templates, diagrams, animated 3D characters and more. The scientific study of behavior and mental processes Philosophical Developments A Question Introduction%20linkage%20analysis,%20Genetic%20markers,%20mapping%20functions%20Lecture%203. 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. Tap here to review the details. Most research studies result in a extensive. lt(?n1)2gt (in general). 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 TI%)$IJB'mVl~~ {kc$N/^\p% I]zDdA h7+L$"H.1KaP Zs.emeni"^]WON/~whm{+?4sZ@2 !X(5Ze `gookv mp9@TX_Ku~K%goECcx:n;?(7 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 Test to compare several means. As N increases, the mean value increases ? If so, just upload it to PowerShow.com. Common Statistical Methods for Clinical Research with SAS Examples, Third Edition. data analysis techniques and statistical softwares. Clinical Research Methods - . Hidden error because cant be detected without a proper power analysis. 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%). Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. 3. February 13, 2010. Quantitative vs. Qualitative: Methods and Process The scientific method, also known as a priori or pre-established design. }>@X'- (W? vORv[K? +KRs8@f Pdk )px!` mC#07jd}c^ ! Practical Statistics for Medical Research. BIOS:6610 STATISTICAL METHODS IN CLINICAL TRIALS - . 4 R $ KT XAYM( "n R $ SJqO& U "n R $ 2N[q It appears that you have an ad-blocker running. - Introduction to Hypothesis Testing Chapter 8 - Chapter Outcomes After studying the material in this chapter, you should be able to: Formulate null and alternative An Introduction to Statistical Problem Solving in Geography - 2nd Edition. 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. uji hipotesis. @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ ` a b c d e f h i j k l m n o p q r s t u v w x y z { | } ~ Fn KT XAYM( JFIF f f Exif MM * b j( 1 r2 i f f Adobe Photoshop CS Macintosh 2008:11:28 11:45:55 &( . Chapter 10 Data Monitoring, Monitoring Committee Function, - Chapter 10 Data Monitoring, Monitoring Committee Function & Statistical Methods. Regression Based on fitting a line to data Provides a regression coefficient, which is the slope of the line Y = ax + b Use to predict a dependent variables value based on the value of an independent variable. P values, Statistical Methods in Clinical Research James B. By whitelisting SlideShare on your ad-blocker, you are supporting our community of content creators. 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. Click here to review the details. roger l. bertholf, ph.d., dabcc associate, Statistical Methods - . Sometimes, u is called the 1st moment of P(u). Is the most common value More frequently used to describe the distribution of data Uni-modal, bi-modal, etc. - Chapter 8: Introduction to Find the lower and upper confidence limits. You might get some help from www.HelpWriting.net Success and best regards! august 12, 2009. Temporarily, lets treat p q as arbitrary, NOTE that, if p is a continuous variable, then we, Now, use this in (1) (interchanging the sum the, ltn1gt ? The aim of this study was to compare PPT and traditional lecture method in material understandability, effectiveness and attitude among university students. Statistical research is the rigorous development of improved or new statistical methods grounded in probability and statistical theory. Comparative descriptive survey research design was employed to answer the research questions raised. DESCRIPTIVE). Standard Error Standard error of the mean Standard deviation / square root of (sample size) (if sample greater than 60) Standard error of the proportion Square root of (proportion X 1 - proportion) / n) Important: dependent on sample size Larger the sample, the smaller the standard error. 2022 in a Nutshell Reminiscing the year when opportunities were seized and feats were achieved! Do not sell or share my personal information, 1. Much more useful than correlation Allows prediction of values of Y rather than just whether there is a relationship between two variable. u " ? descriptive statistics inferential statistics. 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. Then you can share it with your target audience as well as PowerShow.coms millions of monthly visitors. 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. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. Chapter 1 Introduction. Click here to review the details. 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. Test of Strength & Direction of Linear Relationship of 2 Quantitative Variables. - Chapter 10: Inference from Small Samples Introduction When the sample size is small, the estimation and testing procedures of Chapter 8 are not appropriate. large data, Statistical Methods - . )pn1qn2 ? Activate your 30 day free trialto continue reading. Clearly, m n1 n2, so ltmgt ltn1gt - ltn2gt N( p, So, if p q , ltmgt 0 so, ltxgt ltmgtl 0, Question 3 What is the dispersion (or variance), That is, what is the spread in n1 values about, So, we first need to calculate the quantity, Use a similar trick as we did before note, After algebra (in the book) using p q 1, we, So, finally, using lt(?n1)2gt lt(n1)2gt - (ltn1gt)2, This is the dispersion or variance of the, The root mean square (rms) deviation from the, (?n1) ? Ist Yr MSc(N) It appears that you have an ad-blocker running. 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. By accepting, you agree to the updated privacy policy. Clinical Research Methods - . Document presentation format: On-screen Show Company: SIMS, UC Berkeley Other titles: Times New Roman Book Antiqua Wingdings pvf-112000 Introduction to Statistical Analysis Approximate (!) By accepting, you agree to the updated privacy policy. - 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. Activate your 30 day free trialto continue reading. Data Analysis and Presentation Describing and Presenting Data Three important criteriaaccuracy, conciseness, and understandability Researchers should always present their data in ways that most accurately represent the data Numerical data can be classified as numerical (example: percentages, (means) or graphical (graphs) method) Statistics Three areas: 1) Descriptive - central tendency . - CHAPTER 3 Review of Statistics INTRODUCTION The creation of histograms and probability distributions from empirical data. (n1 0?N) N!/(n1!n2! 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. marcia a. testa, mph. N. lt(?m)2gt lt(m - ltmgt)2gt in the net displacement? (Pearsons) Chi-Squared (2) Test Used to compare observed proportions of an event compared to expected. 3. In inferential statistics, we are generally using a sample. It has millions of presentations already uploaded and available with 1,000s more being uploaded by its users every day. For example, suppose we measure the weight of 100 patients in a study. christopher s. coffey. 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. You might even have a presentation youd like to share with others. Cathy Walker. 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. Click here to review the details. Free access to premium services like Tuneln, Mubi and more. The SlideShare family just got bigger. - An Introduction to Statistical Problem Solving in Geography - 2nd Edition . Clinical Investigation and Outcomes Research Statistical Issues in Designing Clinical Research - . The SlideShare family just got bigger. You can read the details below. Data presentation. Types of data Continuous data Theoretically infinite possible values (within physiologic limits) , including fractional values Height, age, weight Can be interval Interval between measures has meaning. You never know which directions study results will go. I am looking for Editing/ Proofreading services for my manuscript We've updated our privacy policy. Looks like youve clipped this slide to already. need to solve 1023, Quantum Schrdingers Equation ?? biostatistics 212 lecture 1. today. Data presentation is an extension of data cleaning, as it involves arranging the data for easy analysis. If so, share your PPT presentation slides online with PowerShow.com. You can read the details below. diana trandabat 2013-2014. the sentence as a string of words e.g i saw the lady with. And, again, its all free. STATISTICS IN Looks like youve clipped this slide to already. Sz_]WMi4}S:4c_KC%. You can read the details below. ! " 3rd edition. Dr. Shamanthakamani Narendran M.D. {k68vX o F?5z[gfA)aU[x[~z ^SK&Kamis~ [] 5okev{\-p5}a0Ly O/;]/nEQ)Rllp.k$n-w87[W n)f3}u=[`9cf UhsH-"A Most commonly used in assessing the estimate of the difference between two groups. Very helpful- In analysis of height and weight, for a known height, one can predict weight. continuous data. It appears that you have an ad-blocker running. Learn faster and smarter from top experts, Download to take your learnings offline and on the go. Sample Size Calculation Also called power analysis. During her talk, Li will share personal and . Presentation Transcript. Often presented graphically as a 2 X 2 Table, Chi-Squared (2) Test Chi-Squared (2) Formula Not applicable in small samples If fewer than 5 observations per cell, use Fishers exact test, Correlation Assesses the linear relationship between two variables Example: height and weight Strength of the association is described by a correlation coefficient- r r = 0 - .2 low, probably meaningless r = .2 - .4 low, possible importance r = .4 - .6moderate correlation r = .6 - .8 high correlation r = .8 - 1 very high correlation Can be positive or negative Pearsons, Spearman correlation coefficient Tells nothing about causation, Correlation Source: Harris and Taylor. Errors Type I error Claiming a difference between two samples when in fact there is none. Winner of the Standing Ovation Award for Best PowerPoint Templates from Presentations Magazine. need to solve. 3rd edition. Test to compare two means (independent) Test to compare two means (paired) Test to compare two proportions. B^uuhm?}{].~}v_J;xogJY]@.)oqC? ~ :q;M }ARv=vc[NHev]UB E1Gn ?zE. Click here to review the details. Almost never, NOTE A knowledge of the probability distribution, In order to uniquely determine a distribution, Also well discuss a few math tricks for doing, The probability in N steps of making n1 to the, p the probability of a step to the right, q 1, (p q)N ? 3 !1AQa"q2B#$Rb34rC%Scs5&DTdEt6UeuF'Vfv7GWgw 5 !1AQaq"2B#R3$brCScs4%&5DTdEU6teuFVfv'7GWgw ? Confidence Intervals Commonly reported in studies to provide an estimate of the precision of the mean. Quantitative vs. Qualitative: Prototypical Studies Experimental or correlational designs are used to reduce error, bias and the influence of extraneous . 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. 1994. page 99 There were statistically significant different collecting and describing data. Ratio of two interval data points has no meaning Temperature in celsius, day of the year). RESEARCH (PART 1 Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. Now customize the name of a clipboard to store your clips. When the sample size is small, the estimation and testing procedures of Chapter 8 are not appropriate. Many of them are also animated. Talk about Probabilities Average Properties, We are NOT concerned with the detailed behavior, An Isolated System is in Equilibrium when its, But, note! P Values The probability that any observation is due to chance alone assuming that the null hypothesis is true Typically, an estimate that has a p value of 0.05 or less is considered to be statistically significant or unlikely to occur due to chance alone. Clarification Standard Deviation measures the variability or spread of the data in an individual sample. Research Method.ppt 1 of 70 Research Method.ppt Feb. 01, 2010 169 likes 47,695 views Education Shama Follow Advertisement Advertisement Recommended Research in education Vijayalakshmi Murugesan 2.3k views 65 slides Research methodology Md Saifullah Khalid 7.1k views 32 slides Rm chapter 2 report cheppumol 535 views 10 slides 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. We've encountered a problem, please try again. > g Medical Statistics Part-II:Inferential statistics, Parametric test - t Test, ANOVA, ANCOVA, MANOVA, Research method ch07 statistical methods 1, Inferential statistics quantitative data - anova, univariate and bivariate analysis in spss, Nursing care of patients having conduction disorders, Planning process, 5 year plan and commitee reports, Coronary circulation and fetal circulation, Biochemistry of blood in relation to cardio pulmonary function, Privileges, community programmes of aged people, General health assessment and history taking, Uses knowledge of text structure to glean the information he/she needs, College Achievement Certificates _ by Slidesgo.pptx, CONTEMPORARY ARTS IN THE REGION week 4-5.pptx, Class 9 Chapter 5 Euclid's geometry (Theorems and Problems)_Lecture 2.pdf, Class 9_Chapter 4_Linear equations in two variables, No public clipboards found for this slide, Enjoy access to millions of presentations, documents, ebooks, audiobooks, magazines, and more. / 0 1 2 3 4 5 6 7 8 9 : ; = > ? But m 2n1 N, so n1 ()(N, n2 N - n1 ()(N - m). For example, tables or graphs are used to organize data, and descriptive values such as the average score are used to summarize data. Statistical methods are mathematical formulas, models, and techniques that are used in statistical analysis of raw research data. I can advise you this service - www.HelpWriting.net Bought essay here. 1994. page 99 63 Tips 6 (b) P-value vs. 95CI (4) Adapted from Armitage, P. and Berry, G. Statistical methods in medical research. Remember there is variability among samples- they might seem to come from different populations but they may not. gordon c. nagayama hall 355 straub phone: 346-4969 e-mail: gnhall@darkwing.uoregon.edu. Used with nominal data (better/ worse; dead/alive) If there is a substantial difference between observed and expected, then it is likely that the null hypothesis is rejected. So the probability, which is probably the most elementary (discrete), As another example, suppose that p q , N, The Binomial Distribution is only one example of, Most of the following results are valid for ANY, Let u a variable which can take on any of M, with probabilities P(u1),P(u2),P(u3),..,P(uM-1),P, The Mean (average) value of u is defined as, S1 P(u1) P(u2) P(u3) .. P(uM-1) P(uM), For a properly normalized distribution, S1.
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