A Consumer Research Group Purchased Identical Items in Eight Drugstores

question 12

Multiple Choice

A consumer research group purchased identical items in eight drugstores. The costs for the purchased items were $85.74, $90.7, $81.43, $80.65, $88.73, $82.42, $87.9, and $85.82. Calculate the mean and the median costs of the purchased items.

• A) Mean: $87.421; median: $87.780
• B) Mean: $86.421; median: $86.780
• C) Mean: $85.421; median: $85.780
• D) Mean: $87.621; median: $87.980
• E) Mean: $88.721; median: $89.080

---

Definitions:

Factor Analytic Technique

A statistical method used to describe variability among observed, correlated variables in terms of potentially lower number of unobserved variables, called factors.

Test Construction

The process of developing a test that accurately measures what it is intended to measure, with reliability and validity.

Factor Analytic Approach

A statistical method used in psychology to identify clusters of related items (factors) on tests or surveys, revealing underlying variables.

Correlations

Statistical measures that describe the extent to which two variables change together, but not necessarily indicating causation.