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a)
To explain features of the distribution from Histogram and boxplot.
a)
Answer to Problem 7E
The Histogram and boxplot shows the distribution unimodal and right skewed.
Explanation of Solution
Given:
Calculation:
The Histogram and boxplot shows the distribution unimodal and right skewed. There are two outliers shows around 37 and 47. The
b)
To explain features of the distribution, include on Histogram but not in boxplot.
b)
Answer to Problem 7E
The unimodal shape of the distribution.
Explanation of Solution
Given:
Calculation:
The Histogram suggests that the distribution unimodal with increasing between 22 and 24. This shape does not see clear in Boxplot.
c)
To explain which summary statistics is useful to summarize the center of the distribution.
c)
Answer to Problem 7E
Median.
Explanation of Solution
Given:
Calculation:
As the shape of the distribution is right skewed, I would prefer median as an appropriate summary statistic.
d)
To explain which summary statistics is useful to summarize the spread of the distribution.
d)
Answer to Problem 7E
IQR.
Explanation of Solution
Given:
Calculation:
As the shape of the distribution is right skewed, I would prefer IQR as an appropriate summary statistic.
Chapter 5 Solutions
Stats: Modeling the World Nasta Edition Grades 9-12
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