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Chapter 2: Q. 2.30 (page 106)

Maris conducted a study on the effect that playing video games has on memory recall. As part of her study, she compiled the following data:

What is the best estimate for the mean number of hours spent playing video games?

Short Answer

Expert verified

The mean is10.78.

Step by step solution

01

Given

We are given the following data:

02

Explanation

The mean is one of the measures of central tendency in statistics, and it is defined as the total number of observations divided by the total number of observations.

Formula:

In case of grouped data, the formula for calculating the mean is:

Mean=∑fx∑f

Where:

f=frequencyx=midpoint

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