Question

A personnel director at a large company studied the eating habits of employees by watching the movements of a selected group of employees at lunchtime. The purpose of the study was to determine the proportion of employees who buy lunch in the cafeteria, bring their own lunches, or go out to lunch. If the director selects 50 employees at random from throughout the company and categorizes their lunchtime practices by gender, she is:

Answer 1

Answer: blocking for gender

Explanation: Blocking refers to a experimental research procedure which involves splitting experimental variables into separate units. This speration is performed in other to avoid bias or effect this separately identified varibales may bring into our experiment if not tested separately. The blocks may be referred to as known categories upon which variables in an experiment may be divided such that treatment is applied to independently to the separate blocks or experimental unit. In the scenario above, the personnel director is blocking for gender by splitting the variables or participants based on gender.