TABLE 11-4 A Computer Used by a 24-Hour Banking Service Is Supposed

question 94

Multiple Choice

TABLE 11-4
A computer used by a 24-hour banking service is supposed to randomly assign each transaction to one of 5 memory locations. A check at the end of a day's transactions gave the counts shown in the table to each of the 5 memory locations, along with the number of reported errors.

The bank manager wanted to test whether the proportion of errors in transactions assigned to each of the 5 memory locations differ.
-Referring to Table 11-4, the calculated value of the test statistic is ________.

• A) -0.1777
• B) -0.0185
• C) 1.4999
• D) 1.5190

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Definitions:

Test-retest Correlation

A statistical measure that evaluates the stability of test scores over time by examining the correlation between scores from the same individuals at two separate administrations.

Scatterplots

Graphical representations that show the relationship between two quantitative variables, displaying data points on a two-dimensional graph.

Test Worthiness

Determined by an objective analysis of a test in four critical areas: (1) validity: whether or not it measures what it is supposed to measure; (2) reliability: whether or not the score an individual receives on a test is an accurate measure of his or her true score; (3) cross-cultural fairness: whether or not the score the individual obtains is a true reflection of the individual and not a reflection of cultural bias inherent in the test, and (4) practicality: whether or not it makes sense to use a test in a particular situation.

Cross-cultural Fairness

The extent to which assessments, tests, or measures are equitable and free of cultural bias across different cultural or ethnic groups.