A Psychologist Wants to Assess the Reliability of a New

question 44

Short Answer

A psychologist wants to assess the reliability of a new test of Self Control, the higher the scores the higher the level of control. A random sample of college students is selected and given the test. In order to tap the reliability, the test is scored on the basis of comparing the results of the odd items versus the even items. The data follow: $$\begin{array} { c c c } \text { Subject\# } & \text { Odd } & \text { Even } \\1 & 45 & 57 \\2 & 50 & 48 \\3 & 35 & 57 \\4 & 62 & 55 \\5 & 55 & 60 \\6 & 38 & 50 \\7 & 55 & 50 \\8 & 45 & 38 \\9 & 65 & 70 \\10 & 55 & 50\end{array}$$
-What is the correlation when corrected by the Spearman-Brown?

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Definitions:

Variable Production Cost

Charges that fluctuate in line with production levels, such as direct labor and materials used.

Split-off

A point in the production process where multiple products are derived from a common input, and separate paths of further processing or sale are identified.

Avoidable Fixed Production Cost

Fixed costs that can be eliminated if a particular product, service, or segment is discontinued.

Surplus Material

Materials that exceed the requirements of the production process, often resulting in excess inventory.