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Data Set - Probability and Statistics - Exam, Exams of Probability and Statistics

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

2012/2013

Uploaded on 02/18/2013

sankaran
sankaran 🇮🇳

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Download Data Set - Probability and Statistics - Exam and more Exams Probability and Statistics in PDF only on Docsity! Name:_______________________ SID:_______________________ Section:_______________________ Midterm Exam #1-Math 032-F ‘07 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 #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 #5 (10 points) At least what percentage of values in a data set must lie within 3 standard deviations of the mean? Problem #6 Find an example of a data set with mean 3 and mode 1.