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Material Type: Quiz; Professor: Carter; Class: Elementary Probability & Statistics; Subject: Mathematics; University: Pellissippi State Technical Community College; Term: Unknown 1989;
Typology: Quizzes
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MATH 1530 – QUIZ #4 (Quizpak 2) Name ______________________________
x 2 s x s x x s x 2 s
MTH 1530 – STATDISK WORKSHEET – CHAPTER 2 Name ______________________________ 2-1 a. Mean: _______________ Min: _______________ b. Mean: _______________ Max: _______________ c. Provide an explanation for any notable differences between the data for Regular Coke weights per can compared to Diet Coke weights per can._____________________________________
2-2 Mean: ______________ Median: _______________ St. Dev.: ______________ How is the mean affected if the same constant is added to every value in a data set?
How is the standard deviation affected if the same constant is added to every value in a data set?
If a new data set has a mean of (^) x 34.5 and a standard deviation of s 6.7 , what is the mean and standard deviation after 7 has been added to every value? ____________________________ 2-3 Mean: ______________ Median: _______________ St. Dev.: ______________ How is the mean affected if every value in a data set is multiplied by the same constant? ________
How is the standard deviation affected if every value in a data set is multiplied by the same constant? _______________________________________________________________________ If a new data set has a mean of (^) x 34.5 and a standard deviation of (^) s 6.7 , what is the mean and standard deviation after every value has been multiplied by 5? _________________________ 2-4 Mean: _______________ St. Dev.: ________________ Min: _________________ 2-5 Mean: _______________ St. Dev.: ________________ Min: _________________ 2-7 Mean: _______________ Standard Deviation: _______________ Will these results be the same for every set of data? _____________________________________ Explain: _______________________________________________________________________
2-8 Mean: ______________ Median: _______________ St. Dev.: ______________ How is the mean affected by the presence of an outlier? (Compare to 2-1) ________________________________________________________________ How is the median affected by the presence of an outlier? (Compare to 2-1) ________________________________________________________________ How is the standard deviation affected by the presence of an outlier? (Compare to 2-1) ________________________________________________________________ 2.14 Use “Frequency Table Generator” to find each of the following. Mean: _______________ Standard Deviation: _______________