Cronbach's Coefficient Alpha Is Preferred to the Kuder-Richardson 21 When

question 134

Multiple Choice

Cronbach's coefficient alpha is preferred to the Kuder-Richardson 21 when

• A) the items are all of the same level of difficulty.
• B) the items are scored right or wrong (dichotomously).
• C) the responses may receive a varying number of points.
• D) a and c

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Definitions:

Big Data

Extremely large data sets that may be analyzed computationally to reveal patterns, trends, and associations, especially relating to human behavior and interactions.

Volume

The amount of data generated.

Point Estimate

A single value estimate or guess of a population parameter based on sample data.

Sampling Error

The difference between the population parameter and the sample statistic due to chance variation in selecting a sample.