statistical methods in research ppt

6. The following table provides PDF documents of lecture notes to the PowerPoint slides used in this class. Alexander M. Strasak, Qamruz Zaman, Gerhard Marinell, Karl P. Pfeiffer, and Hanno Ulmer. 105 Descriptive Statistics Types of Descriptive Analysis 106 Source: Zamalia Mahmud, 2011 Inferential Statistics Types of Non- Parametric Test 107 Source: Ishak, 2007 conclusions 108 SUMMARY OF SHARING SESSION RESEARCH DESIGN SsR/ SnT Applicable ER S-bR RESEARCH METHOD Aim Design Q Survey Method Administer ing Q Acquiring S ER DATA ANALYSES . This I hope it accomplishes this mission and encourage its free distribution and use as a course text or supplement. Statistical Methods. Quantitative Research Design & Methods Topics Types of quantitative research Measurement Fundamentals Concepts and construct validity Levels of measurement Research Validity Quantitative Research Measurement Fundamentals A key difference is that normal science deals with concepts that are well defined and to great extent standardized measures (e.g. Guidelines on how to write about statistical methods, results, and statistical significance are illustrated with samples of ineffective writing annotated to point out weaknesses, accompanied by concrete examples and explanations of improved presentation. But statistics have some limitations 1. statistical assumptions and conditions Qualitative Seek to explore phenomena Instruments use more flexible, iterative style of eliciting and categorizing responses to questions Use semi-structured methods such SlideShare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The presentation should include: a short intro, your hypotheses, a brief description of the methods, tables and/or graphs related to your findings, and an interpretation of your data. The purpose of it is to identify, transform, support decision making and bring a conclusion to a research. . production of knowledge. About. Methods of presentation must be determined according to the data format, the method of analysis to be used, and the information to be emphasized. Describe the uses of meta-analytic methods. However, last minute editing of my lectures may result in slight differences between these notes and the material presented in class. • The results of these studies are analysed by scientific statistical methods and statistical significance is determined. of basic statistics, including terminology, common terms, and common statistical . . TRB Committee AED60 is concerned with the appropriate application of statistical methods in the field of transportation. The Scope of Statistics If HE science of statistics is essentially a branch of Applied Mathematics, and rna y be regarded as mathematics applied to observational data. There are a vast universe of statistical tools used in medical research. Document presentation format: On-screen Show Company: MSCC Other titles: Times New Roman Symbol WP Greek Century Arial Default Design Microsoft Word Document MathType 4.0 Equation MathType 5.0 Equation Module 28 Sample Size Determination Slide 2 Slide 3 Slide 4 1. The committee will serve as a resource on statistical matters for all other TRB committees or activities; will foster understanding and use of statistics through dissemination and education activities; and will identify and foster research needed in statistics for use in . Solve problems. Statistical methods are It is the science of learning information from data. Survey analysis is one of the most commonly used research methods, scholars, market researchers and organization of all sizes use surveys to measure public opinion. Data can be presented in one of the three ways: -as text; -in tabular form; or -in graphical form. Stratified Sampling: Population divided into different groups from which we sample randomly ! Qualitative Research Methods: A Data Collector's Field Guide. methods. Data and Data Collection Quantitative - Numbers, tests, counting, measuring Data Collection Techniques Observations, Tests, Surveys, Document analysis (the research literature) Quantitative Methods Key Factors for High Quality Experimental Design Data should not be contaminated by poor measurement or errors in procedure. Some characteristics of descriptive research are: Quantitativeness. Multi-methods: Using more than one research method Evaluation research, applied, action research = use qual + quant research methods Mixing Methods: Usually this works well, but depending on the topic/population, there can be limits: Ex: Doing Grounded Theory with Survey data: really impossible because whomever developed the methods in medical research. If you do not know the statistical procedure and how to interpret the results, never use it in the paper. Winner of the Standing Ovation Award for "Best PowerPoint Templates" from Presentations Magazine. Just the . Joint and marginal distributions ( PDF) 8. Review ( PDF) Expectations and transformations of random variables. SPSS stands for "Statistical Package for the Social Sciences". Introduction to missing data and sample selection. Therefore, the statistical parameters have to be obtained in another way. The purpose of this paper is to evaluate such performance across multiple forecasting horizons using a large subset of 1045 monthly time . expressed in qualitative form, statistical methods can be used. Descriptive statistics is concerned with quantitative data and the methods for describing them. 4. Statistical methods involved in carrying out a study include planning, designing, collecting data, analysing, drawing meaningful interpretation and reporting of the research findings. Statistics can study only numerical or quantitative aspects of a problem. 2 Explain how samples and populations, as well as a sample statistic and population parameter, differ. This package is mainly used for statistical analysis of the data. It would be observed that descriptive. They do . • To help those interested in research feel more comfortable . The course examines the methods used in epidemiologic research, including the design of epidemiologic studies and the collection and analysis of epidemiological data. If your paper requires the presentation of your calculations and you are not confident with it, ask a pro to help you. The most important aspect of designing your research is what you want to find out. If you continue browsing the site, you agree to the use of cookies on this website. It is the science of learning information from data. 7. 3.00. Systematic Sampling: Simple Random Sampling in an ordered systematic way, e.g. Both of these tasks are difficult for researchers. This is one software package. 4. Tabulation: Tables are devices for presenting data simply from masses of statistical data. It is used for collection, summarization, presentation and analysis of data. 4. presentation is as means and deviations. 5. Epidemiology is the study of the distribution and determinants of human disease and health outcomes, and the application of methods to improve human health. In very broad terms, statistics can be divided into two branches - descriptive and inferential statistics. Tabulation can be in form of Simple Tables or Frequency distribution table (i.e., data is split […] Statistics Supports The Creative Process. Describe the uses of meta-analytic methods. BMJ: 311; No. Statistics provides a way of organizing data to get information on a wider and more formal (objective) basis than relying on personal experience (subjective). Defend the signi cance of data and safety . This first of two articles on method comparison studies gives some key concepts related to the design of the method comparison study, data analysis and graphical presentation, stressing the importance of a well-designed and carefully planned experiment using adequate statistical procedures for data analysis when carrying out a method comparison. I thank all the teachers, professors, and research colleagues who guided my own learning - especially those in the statistics and biological research departments Stata etc. All of the main research traditions have strengths and weaknesses. SPSS is a good first statistical package to perform quantitative research in social science because it is easy to use and because it can be a good starting point to learn more advanced statistical packages. 3 . with statistics. Always put the statistics at the end of the sentence. Document presentation format: On-screen Show Company: MSCC Other titles: Times New Roman Symbol WP Greek Century Arial Default Design Microsoft Word Document MathType 4.0 Equation MathType 5.0 Equation Module 28 Sample Size Determination Slide 2 Slide 3 Slide 4 1. World's Best PowerPoint Templates - CrystalGraphics offers more PowerPoint templates than anyone else in the world, with over 4 million to choose from. There are numerous di erent In shorter scientific papers, where the aim is to report the findings of a specific study, you might simply describe what you did in a methods section. I have tried to make them exactly the same as the lecture material. QUANTITATIVE RESEARCH-WHAT IS IT? Solve problems. RESEARCH 2 Research refers to the systematic process of group assignment, selection, and data collection techniques. As in other mathematical studies the same formula is equally . The first element is explaining phenomena. Let's go through this definition step by step. Summary. Statistical knowledge helps you use the proper methods to collect the data, employ the correct analyses, and effectively present the results. Statistical methods involved in carrying out a study include planning, designing, collecting data, analysing, drawing meaningful interpretation and reporting of the research findings. However, last minute editing of my lectures may result in slight differences between these notes and the material presented in class. • Based on research question, identify appropriate statistical analysis • Select software package that will implement analysis and account for complex sampling • Examine unweighted descriptive statistics to identify coding errors and determine adequacy of sample size • Identify weights - Make sure missing weights are set to 0 The most important aspect of designing your research is what you want to find out. 7. Times Blank Presentation Research Methods Key Points The Scientific Method Steps of the Scientific Method Step 1:Reviewing the literature Step 2: Formulate a testable hypothesis Step 3: Design the study and collect the data Step 4: Analyze the data and accept or reject hypothesis Step 5: Publish, replicate and seek scientific review Step 6 . The statistical test varies depending on the levels of measurement of the variables, and the objective of the research or hypothesis. detecting improvement or maintaining a high level of performance. The method can be quantitative, qualitative, or mixed (e.g., a quantitative method 1). Statistical Analysis is the science of collecting, exploring, organizing and exploring patterns and trends using its various types, each of the types of these statistical analysis uses statistic methods such as, Regression, Mean, Standard Deviation, Sample size determination and Hypothesis Testing. Paired ttest: compares means between two related groups (e.g., the same subjects before and after) Repeated-measures ANOVA: compares changes over time in the means of two or more groups (repeated measurements) Mixed models/GEE modeling: multivariate regression techniques to compare changes over time between two or more groups; gives rate of . It helps in designing experiments, analyzing and interpreting data. Statistical Signi cance: Statistical signi cance represents the results of some statistical test that is being performed. Most research begins with a general question about the relationship between two variables for a specific group of individuals. Transformations of random variables. STATISTICAL METHODS 1 STATISTICAL METHODS Arnaud Delorme, Swartz Center for Computational Neuroscience, INC, University of San Diego California, CA92093-0961, La Jolla, USA. describes what we mean by quantitative research methods very well: Quantitative research is 'Explaining phenomena by collecting numerical data that are analysed using mathematically based methods (in particu-lar statistics)'. Interviews: personally asking people questions in one-on-one conversations. 5. It is an IBM tool. It also contributes to . The PowerPoint PPT presentation: "Psychological Research Methods and Statistics" is the property of its rightful owner. I have tried to make them exactly the same as the lecture material. Statistics is a crucial process behind how we make discoveries in science, make decisions based on data, and . 16.6.2020. SPC combines rigorous time series projects to facilitate the . The statistics will help the biologist to: (1) understand the nature of variability and (2) helps in deriving general laws from small . 3 Describe three research methods commonly used in behavioral science. But the t-test is not limited to small sample research designs and can also be used for large samples and can be a fairly . This is very common when dealing with research in the physical sciences. Studies were reviewed by two readers and a standardized data collection form completed for . Basic Statistical Techniques in Research 3. present, data and conditions; it is also possible to make prediction s. based on this information. Compute sample size, power, and precision for comparisons of two independent samples with respect to continuous and binary outcomes. Defend the signi cance of data and safety . Random sampling methods ! Inferential Statistics for Test of Means of Two Samples As long as you have the size of the sample, mean, and standard deviation, a t-test will work on small sample comparison, even if the total sample is not provided. speed, distance, volume, weight, size, etc.) Basic Statistical Concepts and Methods. Methods are the specific tools and procedures you use to collect and analyze data (for example, experiments, surveys, and statistical tests ). The results and inferences are precise only if . Generate simple descriptive and inferential statistics that t the study design chosen and answer research question. The Importance of Statistics. Credits. Each of the research approaches involve using one or more data collection methods.These are some of the most common qualitative methods: Observations: recording what you have seen, heard, or encountered in detailed field notes. ADVERTISEMENTS: In this article we will discuss about the presentation methods of statistical data. Develop a Research Design to Address a Research Question, Considering Strength and Weakness of Different Research Methods - High-quality research designs must be selected by the researchers so that, the researchers can use those designs to convey those ideas readers in an understandable mode.

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