What Is the Pooled Variance for the Following Two Samples

question 35

Multiple Choice

What is the pooled variance for the following two samples?

• A)7 Sample 1: n = 8 and SS = 168
• B)  7 Sample 2: n = 6 and SS = 120
• C)20.57
• D)24

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Definitions:

Random Error

Variability in data that is caused by unpredictable and unavoidable fluctuations in the measurement process.

Linearly Correlated

A statistical relationship between two variables in which changes in one variable are associated with proportional changes in another variable along a straight line.

Normally Distributed

Describes a symmetric, bell-shaped distribution of data where the mean, median, and mode are equal, prevalent in many natural phenomena.

Coefficient of Determination

A statistical measure that explains the proportion of the variance for a dependent variable that's explained by an independent variable or variables in a regression model.