PSY3204 CHAPTER 4 QUIZ - weight for team B with 7 members...

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PSY3204 CHAPTER 4 QUIZ 1. In calculating the standard deviation of a sample, we use ____ in the denominator. N-1 2. If 5 points are added to each score in a distribution, which of the following will happen? The standard deviation will be unchanged Exhibit 4-1 An industrial psychologist observed 8 drill-press operators for one working day. She recorded the number of times each operator pressed the "faster" button instead of the "stop" button to determine whether the design of the control panel was contributing to the high rate of accidents in the plant. The resulting scores were as follows: 5, 2, 8, 2, 3, 2, 4, 12 3. Refer to Exhibit 4-1. The mode for this distribution is ____. 2 4. Refer to Exhibit 4-1. The median is ____. 3.50 5. Refer to Exhibit 4-1. The mean is ____. 4.75 6. Refer to Exhibit 4-1. The range is ____. 10 7. Refer to Exhibit 4-1. The standard deviation is ____. Assume sample data. 3.58 8. Refer to Exhibit 4-1. The variance is ____. Assume sample data. 12.79 9. The mean weight for team A with 15 members is 140 lbs., the mean
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Unformatted text preview: weight for team B with 7 members is 135 lbs., and the mean weight for team C with 20 members is 160 lbs. The overall mean weight for all three teams is: 148.69 10. On a physics exam, the instructor gives a bonus question worth 10 points. The class average (mean) without counting the bonus question is 83. If everyone gets the bonus question correct, the class mean would ____. Equal 93 11. In a bell-shaped distribution, ____. Median=mean 12. If a constant of 5 is subtracted from all of the scores, the standard deviation ____. Remains the same 13. In a negatively skewed distribution, the mean will generally be ____ the median. Less than 14. equals ______. Cannot be determined 15. Assume one has a set of 35 scores with mean = 100 and s = 9. If 5 scores, each equal to 100 were added to the distribution, what effect would this have on the mean? X would remain unchanged...
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This note was uploaded on 06/20/2011 for the course PSYCHOLOGY 3204 taught by Professor Someone during the Summer '11 term at University of Central Florida.

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PSY3204 CHAPTER 4 QUIZ - weight for team B with 7 members...

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