www.jntuworld.com RESEARCH METHODOLOGY & STATISTICAL TOOLS MASTER OF BUSINESS ADMINISTRATION (JNTU) A MATERIAL FOR RESEARCH METHODOLOGY AND STATISTICAL TOOLS (According to JNTU Syllabus) Prepared by‚ S. Venkata Siva Kumar; MBA (HR/MRKTG)‚ MSc (Statistics). 1 www.jntuworld.com RESEARCH METHODOLOGY & STATISTICAL TOOLS UNIT-1 RESEARCH METHODOLOGY: An Introduction Meaning of Research: Research in common parlance refers to a search for knowledge. Once can also define
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Definition of Research Research in common parlance refers to a search for knowledge. Once can also define research as a scientific and systematic search for pertinent information on a specific topic. In fact‚ research is an art of scientific investigation. The Advanced Learner’s Dictionary of Current English lays down the meaning of research as “a careful investigation or inquiry especially through search for new facts in any branch of knowledge.” Define Business Research Business research is the
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cents B1=0.3 0.3/1=y/x Slope intercept b0=9.5 Data collection 1) Simple random sampling everyone has equal chance) 2) Stratified random sample (is supposed to be the most precise sampling‚ it doesn’t always work that way) Ex. 2008 election year‚ elected Obama‚ stratified sample it picked Obama as the winner‚ Hilary Clinton 3%‚ ex. 4 men 4 women how? Divide take random sample a cluster sample (save you money when u got large group to do it) Ex. Government use randomly select
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Examples of Multiple Choice Question (20 points) 1. A researcher wants to test if beer consumption differs between people dependent on the region of the country they live in. Region is measured as: East/West/North/South. On which scale is ‘region’ measured? a. Independent scale b. Nominal scale c. Ordinal scale d. 4-points Likert scale 2. Suppose your teachers want to test if the average exam grade exceeds 6 significantly. Which test should we use? a. Chi-square
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random sample. The lottery is a form of simple sampling. It does not use any method to select numbers other than the population number set. Consecutive numbers can be drawn or number far apart from each other. I would like to know more about the difference between the type of random sampling used in lottery draws versus the sampling method steps you described. The only type of selection process in the text book definition states simple random sampling uses selection of elements from the selection
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b) Coding c) Editing d) Drawing statistical inferences 7) Sample Design in which every sample population has equal chance of inclusion in sample is a) Systematic Sampling b) Quota Sampling c) Cluster Sampling d) Simple Random Sampling 8) Arrange the following in the order of occurrence 1) Designing the problem 4) Formulating hypothesis 2) Collection of data 5) Analysing fact 3)
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Introductory Statistics‚ I (P.P. Leung) Lecture notes are based on the following textbook: N.A. Weiss (2012)‚ Introductory Statistics‚ 9th edition‚ Pearson. Chapter 1 The Nature of Statistics 統計本質 §1.1 Two kinds of Statistics §1.4 Other Sampling Designs (其他抽樣方法) Chapter 1 The Nature of Statistics 統計本質 What is Statistics? 何謂統計? From Wikipedia‚ the free encyclopaedia: Statistics is a mathematical science pertaining to the collection‚ analysis‚ interpretation or explanation‚ and
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Beowulf Clusters Beowulf clusters were created in the early 1990s by two NASA employee’s‚ Donald Becker‚ and Thomas Sterling‚ to serve their computational needs. They did this by connecting multiple personal computers on a local network that ran on free open source software. This cluster of interconnected computers allowed them to solve task that normally only a supercomputer could perform. Beowulf clusters yield supercomputer performance at a fraction of the cost. They are relatively inexpensive
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Each firm is inherently part of a "cluster" of activities made up of firms along the value chain as well as related and supporting organizations e.g. research and development‚ finance‚ worker skills‚ infrastructure. In general‚ clusters are geographic concentrations of interconnected companies‚ specialized suppliers‚ service providers‚ firms in related industries‚ and associated institutions in particular fields that compete but also cooperate. A cluster may include industries that share similar
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Acceptance Sampling Acceptance sampling has traditionally been a partner of statistical process control and control charts in the area of statistical quality control. Products are shipped around in batches or lots‚ and the idea behind acceptance sampling is that a batch can be declared to be satisfactory or unsatisfactory on the basis of the number of defective items found within a random sample of items from the batch. Thus acceptance sampling provides a general check on the “quality” of the items
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