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Acing the first test Here are the scores of Mrs. Liaos students on their first
Chapter 1, Problem 92(choose chapter or problem)
Acing the first test Here are the scores of Mrs. Liao’s students on their first statistics test:
(a) Make a boxplot of the test score data by hand. Be sure to check for outliers. (b) How did the students do on Mrs. Liao’s first test? Justify your answer.
Questions & Answers
QUESTION:
Acing the first test Here are the scores of Mrs. Liao’s students on their first statistics test:
(a) Make a boxplot of the test score data by hand. Be sure to check for outliers. (b) How did the students do on Mrs. Liao’s first test? Justify your answer.
ANSWER:
Step 1 of 5
(a)
To construct a boxplot we need the five-number summary of a distribution. The five-number summary of a distribution consists of minimum, the first quartile, the median, the third quartile, and the maximum observation, written in ascending order from smallest to largest.
So, we have to arrange the distribution in ascending order as shown below:
43 |
45 |
72 |
73 |
78 |
80 |
81 |
82 |
82.5 |
85 |
85.5 |
86 |
86 |
87.5 |
87.5 |
88 |
88 |
89 |
91 |
91 |
92 |
93 |
93 |
93.5 |
93.5 |
94.5 |
94.5 |
95 |
96 |
98 |