The Analysis of Variance Helps Us Compare the Means of Two

question 105

Multiple Choice

The analysis of variance helps us compare the means of two, or more quantitative populations. Thus, it might be used by the manager of a farm who wants to know whether there is any difference in:

• A) the average crop yield associated with the use of five types of fertilizer
• B) the average crop yield associated with five alternative quantities of a given type of fertilizer that might be applied
• C) the average crop yield associated with five alternative times at which a given quantity of a given type of fertilizer might be applied
• D) all of these
• E) none of these

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Definitions:

Data

A record of an observation or an event such as a test score, a grade in math class, or response time.

Personal Pizzas

Small-sized pizzas intended for individual consumption, often customizable with a variety of toppings.

Median

The middle value in a data set when it is arranged in ascending or descending order.

Midpoint

The value that lies exactly in the middle of a data set when it is ordered, or the central point of a line segment.