2010 Sample Midterm Key

# 2010 Sample Midterm Key - [SAMPLE TEST] AMS110.02 Midterm...

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[SAMPLE TEST] AMS110.02 Midterm (Spring 2010) Possible Points:100; Time: 80 Minutes Last Name: _____________________ First Name: _____________________ Student ID Number: _____________________ 1. Fifteen sheep were fed pingue (a toxin-producing weed of the southwestern United States) as a part of experiment and died as a result. The time of death in hours after the administering of pingue for each sheep was as follows: 18, 24, 24, 25, 29, 33, 36, 40, 43, 43, 43, 47, 51, 54, 60 a. (10 points) Compute the sample mean, sample variance, and sample standard deviation (to 2 decimal places) Sample mean = 38 Sample variance = 152.86 Sample standard deviation = 12.36 b. (10 points) Give the five-number summary (min, max, median, quartiles) and IQR for this distribution. Min = 18 Max = 60 Median = 40 First quartile = 25 Third quartile = 47 IQR = 47-25=22 c. (10 points) Compute the 70 th percentile for this data set. p=.7 (p)(n+1) =(.7)(16)=11.2 Thus, we should find 11.2th order statistic 11 th order statistic is 43 and 12 th order statistic is 47 Therefore, (4)(20%)=0.8 43+0.8=43.8

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d. (10 points) Construct a boxplot and interpret? 2.
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## This note was uploaded on 03/28/2011 for the course AMS 110 taught by Professor N/a during the Spring '08 term at SUNY Stony Brook.

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2010 Sample Midterm Key - [SAMPLE TEST] AMS110.02 Midterm...

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