STAT 5102 Midterm: STAT 5102 UMN Spring 12 Test 1
Stat 5102 First Midterm Exam February 22, 2012
Name Student ID
The exam is closed book and closed notes. You may use one 81
2×11
sheet of paper with formulas, etc. You may also use the handouts on “brand
name distributions” and Greek letters. Put all of your work on this test form
(use the back if necessary). Show your work or give an explanation of your
answer. No credit for numbers with no indication of where they came from.
The points for the questions total to 100. There are 6 pages and 5 prob-
lems.
1. [20 pts.] For the following data
1.5 2.0 2.5 3.0 6.0
(a) Find the mean of the empirical distribution.
(b) Find the standard deviation of the empirical distribution.
1
(c) Find a median of the empirical distribution.
(d) Find a lower quartile of the empirical distribution.
(e) Find an upper quartile of the empirical distribution.
2
Document Summary
The exam is closed book and closed notes. 2 11 sheet of paper with formulas, etc. You may also use the handouts on brand name distributions and greek letters. Put all of your work on this test form (use the back if necessary). Show your work or give an explanation of your answer. No credit for numbers with no indication of where they came from. The points for the questions total to 100. There are 6 pages and 5 prob- lems: [20 pts. ] 6. 0 (a) find the mean of the empirical distribution. (b) find the standard deviation of the empirical distribution. 1 (c) find a median of the empirical distribution. (d) find a lower quartile of the empirical distribution. (e) find an upper quartile of the empirical distribution. F (x) =(0, x/( + x), x 0. 0 < x is a df (note not pdf) when the parameter is any positive real number.
