The Two Samples Whose Statistics Are Given in the Table $$\begin{array} { | c | c | c | } \hline n & \text { Mean } & \text { SD } \\\hline 12 & 45 & 6 \\\hline 16 & 41 & 8 \\\hline\end{array}$$

question 42

Multiple Choice

The two samples whose statistics are given in the table are thought to come from populations with
Equal variances. What is the pooled estimate of the population standard deviation? $$\begin{array} { | c | c | c | } \hline n & \text { Mean } & \text { SD } \\\hline 12 & 45 & 6 \\\hline 16 & 41 & 8 \\\hline\end{array}$$

• A) 7.22
• B) 7.14
• C) 7
• D) 2.65
• E) 10

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Definitions:

Odd-even Reliability

A measure of internal consistency reliability, where a test is split into odd and even items and the scores are correlated.

Construct Validity

The degree to which a test measures what it claims to be measuring, specifically in terms of whether the test actually assesses the theoretical construct it is designed to measure.

Predictive Validity

The level at which a score from a test or scale forecasts subsequent performance on a connected result.

Content Validity

Refers to the extent to which a test measures an intended content area.