Human Resources Certification Institute (HRCI) Practice Exam

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When updating the calculation for the number of new hires over a 12-month period by adding a recent month and dropping the oldest, what is this method called?

Mean
Central tendency
Rolling average
Weighted average

The correct answer is: Rolling average

A Mean refers to the average of a set of numbers and does not accurately describe the method of updating the calculation for new hires. B: Central tendency is a broader term that refers to the measures of the middle or average values of a set of data, and does not specifically describe the method of updating the calculation for new hires. D: Weighted average involves assigning different weights to different numbers in a set based on their significance, and does not accurately describe the method of updating the calculation for new hires. Overall, the term "rolling average" best describes the method of updating the calculation for new hires because it involves continuously updating a calculation by adding a recent data point and dropping the oldest one. This method is commonly used to track trends over time and smooth out any fluctuations in data.