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This is the Exam of Probability and Statistics which includes Three Numbers, Sample Mean, Median Income, Recipients, Everyday English, Approximately, Short Explanation etc. Key important points are: Data Set, Data Values, Sample Mean, Sample Variance, Quartiles, Frequency Table, Median, Mean, Test Scores, High School
Typology: Exams
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Name:_______________________ SID:_______________________ Section:_______________________
Midterm Exam #1-Math 032-F ‘ Instructor: Devin Greene
The exam is 50 minutes long. No notes are permitted, but calculators are. Show your work.
Problem #1 (10 points)
A data set consists of 2 unknown values x and y as well as 0, for a total of three data values. Find the values x and y given that the sample mean is 0 and the sample variance is 4.
Problem #3 (10 points)
Construct a data set whose median is 5 and whose mean is 3.
Problem #4 (10 points)
A high school teacher gives an exam that is far too easy for most of her students. Would you expect the mean of the test scores to be greater, larger, or about the same as the median of the test scores? Why?
Problem #
Find an example of a data set with mean 3 and mode 1.
Problem #
Construct a frequency histogram for the data set consisting of the number of letters in each word in this sentence.