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Chapter 7: Q. 12 (page 463)

Here is a dot plot of the adult literacy rates in 177countries in 2008, according to the United Nations. For example, the lowest literacy rate was 23.6%, in the African country of Burkina Faso. Use the dot-plot below to answer the Question

The mean of this distribution (don鈥檛 try to find it) will be

(a) very close to the mode.

(b) greater than the median.

(c) less than the median.

(d) You can鈥檛 say, because the median is random.

(e) You can鈥檛 say, because the mean is random.

Short Answer

Expert verified

The mean of this distribution will be option (c) less than the median.

Step by step solution

01

Given information

Dot plot of the adult literacy rates in 177countries in2008

The lowest literacy rate is23.6%

02

Explanation

This inquiry inquires about the mean and its relationship to the median.

This is a simple question if you remember that outliers have a greater impact on the mean than on the median.

When there is a left skew, the outliers push the mean to the left of the median.

The mean is dragged more to the right than the median when there is a right skew.

Since skewed left, the mean is dragged to the left than the median therefore the answer is (c) less than the median.

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