The following data set lists the mid-term scores received by 50 students in a Quantitative Methods’ class: 45, 85, 92, 99, 37, 68, 67, 78, 81, 25, 97, 100, 82, 49, 54, 78, 89, 71, 94, 87, 21, 77, 81, 83, 98, 97, 74, 81, 39, 77, 99, 85, 85, 64, 92, 83, 100, 74, 68, 72, 65, 84, 89, 72, 61, 49, 56, 97, 92, 82 i. Calculate the first, second, and third quartiles of the mid-terms scores ii. Calculate the interquartile range. What can you conclude from this?

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Chapter10: Statistics
Section10.5: Comparing Sets Of Data
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The following data set lists the mid-term scores received by 50 students in a Quantitative
Methods’ class:
45, 85, 92, 99, 37, 68, 67, 78, 81, 25,
97, 100, 82, 49, 54, 78, 89, 71, 94, 87,
21, 77, 81, 83, 98, 97, 74, 81, 39, 77,
99, 85, 85, 64, 92, 83, 100, 74, 68, 72,

65, 84, 89, 72, 61, 49, 56, 97, 92, 82


i. Calculate the first, second, and third quartiles of the mid-terms scores
ii. Calculate the interquartile range. What can you conclude from this?

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