Submitted by: Submitted by Dianerose1399
Views: 441
Words: 1062
Pages: 5
Category: Business and Industry
Date Submitted: 04/07/2012 01:36 PM
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Grading Summary |
These are the automatically computed results of your exam. Grades for essay questions, and comments from your instructor, are in the "Details" section below. | Date Taken: | 10/30/2011 |
Time Spent: | 10 secs |
Points Received: | 20 / 40 (50%) |
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Question Type: | # Of Questions: | # Correct: |
Multiple Choice | 10 | 5 |
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Grade Details |
1. | Question : | Consider the following data on distances traveled by people to visit the local amusement park and calculate the relative frequency for the shortest distance.
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| Student Answer: | | .375 |
| | | .150 |
| | | .500 |
| | | .300 |
| | | .333 |
| Instructor Explanation: | Relative Frequency Calculations: Frequency/Total Frequency
Total Frequency = 40, Relative Frequency for the shortest Distance: 15 /40 = 0.375 |
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| Points Received: | 4 of 4 |
| Comments: | |
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2. | Question : | The following is a relative frequency distribution of grades in an introductory statistics course.
If this was the distribution of 200 students, find the frequency of failures: |
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| Student Answer: | | 12 |
| | | 6 |
| | | 23 |
| | | 46 |
| | | 3
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| Instructor Explanation: | Frequency for the “F” = Relative Frequency x Total Students = 0.06 x 200 = 12 |
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| Points Received: | 0 of 4 |
| Comments: | |
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3. | Question : | A random sample of 12 joggers was asked to keep track and report the number of miles they ran last week. The responses are:
5.5 7.2 1.6 22.0 8.7 2.8 5.3 3.4 12.5 18.6 8.3 6.6
Compute the three statistics that measure central location. |
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| Student Answer: | | Mean: 6.9, Median: 8.54 |
| | | Mean: 6.9, Median: 9.64 |
| | | Mean: 8.54, Median: 6.9 |
| | | Mean: 7.2, Median: 8.12 |
| | | Mean:...