26 results for your search

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Chi-Square Tests

(Coastline Community College), 27 mins, 27 page(s)

This program introduces the chi-square, or chi-squared, test. The DVD offers practical examples that show how a business and a scientific research institute use chi-square tests to make inferences about differences seen in outcomes.

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Choosing Inference Procedures

(Coastline Community College), 27 mins, 27 page(s)

This program offers a step-by-step guide for selecting the proper inference procedure. It shows how to determine when a problem requires a significance test or a confidence interval, differentiate one-sample from two-sample data, distinguish means from proportion data, and decide whether a problem calls for a one-...

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Comparing Two Means

(Coastline Community College), 27 mins, 27 page(s)

This DVD introduces the two-sample t test and shows how researchers use it to examine inferences comparing two groups. It teaches how to recognize when the two-sample t procedures are appropriate for use, explain the difference between two-sample data and matched-pair data, perform a two-sample t test, and constru...

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Confidence Intervals

(Coastline Community College), 27 mins, 27 page(s)

This DVD shows how to calculate and interpret confidence intervals for µ within context with a known standard deviation. It also teaches how to interpret the confidence level and the margin of error.

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Contrasts: Comparing Means

(Coastline Community College), 27 mins, 27 page(s)

This DVD explains how to proceed after an ANOVA test reveals that there is a difference among the means of three or more groups. It also considers how statisticians compare the data from a significant ANOVA F test.

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Describing Distributions

(Coastline Community College), 27 mins, 27 page(s)

This DVD shows how researchers make sense out of data and explains how statisticians find order in numbers. It emphasizes the need for measures of center and spread and describes the difference between mean and median.

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How to Keep Customers Coming Back

(Columbia Books LLC), 14 mins, 14 page(s)

Emphasizing the importance of quality customer service, this DVD teaches techniques for improving listening skills in customer interactions.

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Inference for One Mean

(Coastline Community College, 2010), 27 mins, 27 page(s)

This DVD introduces the t test, which researchers use to determine whether their results could have occurred by chance, and demonstrates the evaluation of an inference for one sample mean.

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Inference for Regression

(Coastline Community College), 27 mins, 27 page(s)

This DVD shows how a correlation found in a test sample can have a dramatic impact on the population under study. It considers the purpose of inference for linear regression, covers the significance of the standard error of regression, explores the confidence interval, and looks at the use of significance tests.

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Inferential Statistics

(Films Media Group, 2005), 36 mins, 36 page(s)

This DVD demonstrates probability theory and emphasizes the importance of using the correct test to analyze data. It covers such topics as setting significance levels, tests of difference, degrees of freedom, the Yates correction factor, expected frequencies, plastic interval scales, and parametric tests.

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