(a)
To make: a boxplot of the given data
(a)
Answer to Problem 91E
Explanation of Solution
Given:
Calculation:
The box plot for data from first period statistics class on the number of text messages and calls they had sent or received in the past 24 hours is below:
Now to check for outlier, we will calculate IQR and then we will find out the upper and lower limits:
Any value above 103 and below -57 would be an outlier thus in this case 118 is an outlier.
Conclusion:
“Thus, box-plot is made for the given data.”
(b)
To find: whether the given data supports the statement that number of texts is sent by teens
(b)
Answer to Problem 91E
No.
Explanation of Solution
In the data set, 4 of the 25 students have sent at least 58 texts during 24 hours.
The data does not support the findings as majority of teenagers are sending on an average 9 texts per day that makes
Chapter 1 Solutions
The Practice of Statistics for AP - 4th Edition
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