In an exam, the scores of 15 students in a class are as follows. 76, 77, 69, 85,
ID: 3352085 • Letter: I
Question
In an exam, the scores of 15 students in a class are as follows. 76, 77, 69, 85, 69, 80, 42, 74, 53, 89, 83, 73, 74, 75, 60
What is the mean? Round your answer to the nearest 0.01.
What is the standard deviation? Round your answer to the nearest 0.01.
What is the median? Round your answer to the nearest 0.01.
What is the first quartile (Q1)? Round your answer to the nearest 0.01.
What is the third quartile (Q3)? Round your answer to the nearest 0.01.
What is the interquartile range (IQR)? Round your answer to the nearest 0.01.
Explanation / Answer
The statistical software output for this problem is:
Summary statistics:
Hence,
Mean = 71.93
Standard deviation = 12.32
Median = 74
Q1 = 69
Q3 = 80
IQR = 11
Column Mean Std. dev. Median Q1 Q3 IQR Data 71.933333 12.319941 74 69 80 11Related Questions
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