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Chapter 10: Q78 - Exercises (page 686)

Literacy Do males have higher literacy rates than females, on average, in Islamic countries? The following table shows the percent of men and women who were literate in 24 largely Muslim nations at the time of this writing.

  1. Explain why these are paired data.

  2. A dot plot of the difference (Male鈥揊emale) in literacy rate for each country is shown. Describe what the graph reveals about whether males have higher literacy rates than females in these countries, on average.

  3. Calculate the mean difference and the standard deviation of the differences. Interpret the standard deviation.

Short Answer

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Step by step solution

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Dot Plot Interpretation 

The dot plot denotes that the difference (male - female) is positive in all the sample units. So, it represents that male literacy rate > female literacy rate.

male literacy ratefemale literacy ratedifference
43.112.630.5
86.086.00
99.999.70.2
62.053.48.6
82.265.416.8
97.089.67.4
91.282.51.95
89.073.615.4
96.690.26.4
99.899.30.5
99.398.11.2
93.486.07.4
98.690.77.9
95.490.74.7
76.157.618.5
67.042.025
90.481.39.1
86.073.612.7
99.899.60.2
95.180.314.8
99.398.21.1
99.398.31
99.699.00.6
81.246.834.7

Mean=226.65/24= 98.295

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