Assignment 4 - Lesson 4 - Summary Statistics

# Assignment 4 - Lesson 4 - Summary Statistics -...

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Problem 1.    The exam grades of 27 students are posted on the blackboard.  Import the data into Data Desk and  answer the following questions.  Summary of Exam Grades No Selector   Count: 27 Mean: 81.8519 Median: 84 MidRange: 54.5 Variance: 316.208 StdDev: 17.7822 Range: 91 IntQRange: 16.5 Summary of Grades w/no outlier No Selector  Count: 25 Mean: 84.04 Median: 84 MidRange: 81.5 StdDev: 10.1344 Range: 37 IntQRange: 15.5 1.Mean = 81.8519, Standard deviation = 17.7822, Midrange = 54.5, Midquartile range = 84.5,  IQR =  16.5. 3. Mean    a. Larger Median       c. Little changed S.D.    b. Smaller Range        b. Smaller     IQR          b. Smaller        4. Mean = 84.04, Median = 84, Standard deviation = 10.1344, Range = 37, IQR = 15.5. Problem 2.

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## This note was uploaded on 06/09/2011 for the course STAT 113 taught by Professor Thaler during the Spring '11 term at CUNY Hunter.

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Assignment 4 - Lesson 4 - Summary Statistics -...

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