Descriptive_Statistics Answers - DESCRIPTIVE STATISTICS...

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1 DESCRIPTIVE STATISTICS: NUMERICAL MEASURES MULTIPLE CHOICE QUESTIONS In the following multiple choice questions, circle the correct answer. 1. Which of the following provides a measure of central location for the data? a. standard deviation b. mean c. variance d. range Answer: b 2. A numerical value used as a summary measure for a sample, such as sample mean, is known as a 3. Since the population size is always larger than the sample size, then the sample statistic 4. μ is an example of a 5. The hourly wages of a sample of 130 system analysts are given below. mean = 60 range = 20 mode = 73 variance = 324 median = 74 The coefficient of variation equals a. 0.30% b. 30% c. 5.4% www. statisticsassignmentexperts.com email us at [email protected] statisticsassignmentexperts.com or call us at +1 520 8371215
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d. 54% Answer: b 6. The variance of a sample of 169 observations equals 576. The standard deviation of the sample equals 7. The median of a sample will always equal the 8. The median is a measure of 9. The 75th percentile is referred to as the a. first quartile b. second quartile c. third quartile d. fourth quartile Answer: c 10. The p th percentile is a value such that at least p percent of the observations are 11. The difference between the largest and the smallest data values is the www. statisticsassignmentexperts.com email us at [email protected] statisticsassignmentexperts.com or call us at +1 520 8371215
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12. The first quartile
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