Business Statistics

Lecture on Sample Size Determination

Lecture on Sample Size Determination

This Lecture paper is made on Sample Size Determination. Sample size determination is an important and often difficult step in planning an empirical study. From a statistical perspective, sample size depends on the following factors: desired precision of estimates, type of analysis to be performe.....

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Sampling and Sampling Distribution

Sampling and Sampling Distribution

A sampling distribution is the probability distribution, under repeated sampling of the population, of a given statistic (a numerical quantity calculated from the data values in a sample). The formula for the sampling distribution depends on the distribution of the population, the statistic being.....

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Basic of Business Statistics

Basic of Business Statistics

Statistics is the study of the collection, organization, analysis and interpretation of data. It deals with all aspects of this including the planning of data collection in terms of the design of Surveys  and experiments. When you have completed this chapter, you will be able to: Define what is .....

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Lecture on Introduction to Statistics

Lecture on Introduction to Statistics

What is Statistics? Life in the modern world is extricably bound up with the notions of number, counting and measurement. In speaking about the Chinese, Anatole France once remarked: “If they don’t count, they won’t count.” The same remark would well apply to any other group of people. St.....

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Basic concept in Statistics

Basic concept in Statistics

Statistical Inference makes use of information from a sample to draw conclusions (inferences) about the population from which the sample was taken.An experiment is any process or study which results in the collection of data, the outcome of which is unknown. In statistics, the term is usually res.....

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Lecture on Tests of Hypothesis

Lecture on Tests of Hypothesis

Tests of Hypothesis This lesson describes how to test a hypothesis about a proportion when the sample size is small, as long as the sample includes at least one success and one failure. When you have completed this chapter, you will be able to: Describe the characteristics of Student’s t-distri.....

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Lecture on Variable

Lecture on Variable

The word variable is often used in the study of statistics, so it is important to understand its meaning. A variable is a characteristic that may assume more than one set of values to which a numerical measure can be assigned. Height, age, amount of income, province or country of birth, grades ob.....

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