I If Samples Taken from Two Populations Are Not Independent

question 9

Multiple Choice

i. If samples taken from two populations are not independent, then a test of paired differences is applied.
Ii) The paired difference test has (n1 + n2 - 2) degrees of freedom.
Iii) The paired t test is especially appropriate when the sample sizes of two groups are the same.

• A) (i), (ii) and (iii) are all correct statements
• B) (i) and (ii) are correct statements, but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i) is a correct statement, but not (ii) and (iii).

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Definitions:

Mean IQ Score

The average score derived from a set of intelligence quotient (IQ) test results.

Restandardize

The process of revising and updating standards or norms, typically in the context of tests or measurements, to reflect current information or conditions.

Mean Score

A statistical measure that represents the average value of a set of numbers.

Standard Deviation

A statistical measure that quantifies the amount of variation or dispersion of a set of data values.