Which of the Following Is the Index of How Much

question 63

Multiple Choice

Which of the following is the index of how much a typical score differs from the mean of a group of scores?

• A) z-score
• B) range
• C) Pearson r
• D) standard deviation

---

Definitions:

Maintenance Service

Services performed to keep equipment or facilities in optimal working condition, including repairs, cleaning, and regular check-ups.

Promotion

Marketing activities aimed at increasing awareness of a product or brand, persuading people to choose it over competitors' offerings, and encouraging purchase.

Noncumulative Quantity Discount

A pricing strategy where a discount is offered on a single purchase based on the quantity ordered, without considering past purchases.

Cumulative Quantity Discount

A pricing strategy where the price per unit decreases as the total quantity purchased by a customer over time increases.