Which of the Following Would Cause F _obt to Increase

question 189

Multiple Choice

Which of the following would cause F _obt to increase?

• A) an increase in the difference between the means
• B) an increase in the within-groups variability
• C) an increase in the magnitude of the independent variable's effect
• D) an increase in the difference between the means and an increase in the within-groups variability
• E) an increase in the difference between the means and an increase in the magnitude of the independent variable's effect

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Definitions:

Z-test

A Z-test is a statistical test used to determine whether two population means are different when the variances are known and the sample size is large.

Population Means

The average of a set of measurements, scores, or values for the entire population.

Pooled Variance

An estimate of the common variance of two or more groups that is weighted by the degrees of freedom of each group.

Standard Error

The standard deviation of the sampling distribution of a statistic, often used to quantify the accuracy of a sample mean.