Math 1140 - Introduction to Statistics » Fall 2021 » Quiz 2 Chapter 2 and 3

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Question #1
Find the midrange for the given sample data. 49 52 52 52 74 67 55 55
A.   52
B.   55
C.   61.5
Question #2
Find the median for the given sample data. The temperatures (in degrees Fahrenheit) in 7 different cities on New Year's Day are listed below. 25 25 31 53 64 73 83 Find the median temperature.
A.   53°F
B.   63°F
C.   55°F
Question #3
Find the standard deviation for the given sample data. Round your answer to one more decimal place than the original data. 18 18 18 9 15 5 10 5 15
A.   5.4
B.   5.5
C.   6.4
Question #4
Find the variance for the given sample data. Round your answer to one more decimal place than the original data. 7 7 2 5 1
A.   8.8
B.   7.8
C.   7.7
Question #5
If your score on your next statistics test is converted to a z score, which of these z scores would you prefer?
A.   2.2
B.   2.5
C.   2.00
Question #6
Solve the problem. Round results to the nearest hundredth. The mean of a set of data is 4.11 and its standard deviation is 3.03. Find the z score for a value of 10.86.
A.   2.23
B.   2.21
C.   2.13

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