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| To form a __________ we form a ratio between each frequency and the total number of scores in the set.A. stem-and-leaf display B. frequency distribution C. relative frequency distribution D. frequency polygon Reset Selection What’s This? |
| Question 2 of 205.0 PointsPlease use the following to answer questions 2-3: Class ScoresFrequency (f)(lower limit < value < upper limit) 0-20620-40940-601560-801280-1008 What is the relative frequency of the 20–40 class?A. 0.30 B. 0.18 C. 0.225 D. 9 Reset Selection What's This? |
| Question 3 of 205.0 PointsWhat is the percent frequency of the 60-80 class?A. 12% B. 24% C. 30% D. 84% Reset Selection What’s This? |
| Question 4 of 205.0 PointsFor Questions 4-7, use the following data:The number of file conversions performed by a processor per day for 10 days was:15, 27, 25, 28, 30, 31, 22, 25, 27, 29What is the arithmetic mean of the data?A. 20.7 B. 25.9 C. 27 D. 29 Reset Selection What’s This? |
| Question 5 of 205.0 PointsWhat is the trimmed mean of the data?A. 22.875 B. 26.625 C. 31.525 D. 34.375 Reset Selection What’s This? |
| Question 6 of 205.0 PointsWhat is the median of the data?A. 26 B. 26.5 C. 27 D. There is no median for this data set. Reset Selection What’s This? |
| Question 7 of 205.0 PointsWhat is the mode of the data?A. 25 B. 25 C. There is no mode for the data set. D. The data set is bimodal, with modes of 25 and 27. Reset Selection What’s This? |
| Question 8 of 205.0 PointsSample data on employee age for a large auto parts manufacturer are as follows: Employee AgeFrequency25-292530-343335-396240-442645-493150-548 What is the mean age of the employees?A. 37 B. 37.32 C. 37.78 D. 38.83 Reset Selection What’s This? |
| Question 9 of 205.0 PointsA survey of the number of television sets per household in a city yielded the following results: Number of TV SetsNumber of Households1400280034004100 What is the trimmed mean of the number of televisions per household?A. 425 B. 200 C. 340 D. 725 Reset Selection What’s This? |
| Question 10 of 205.0 PointsFor questions 10-13, use the following data:13 29 41 60 89 14 26 53 7 14What is the arithmetic mean of the data?A. 20 B. 14 C. 34.6 D. 82 Reset Selection What’s This? |
| Question 11 of 205.0 PointsWhat is the range of the data?A. 14 B. 34.6 C. 82 D. 50 Reset Selection What’s This? |
| Question 12 of 205.0 PointsWhat is the variance of the data?A. 231.04 B. 616.64 C. 685.16 D. 1,197.16 Reset Selection What’s This? |
| Question 13 of 205.0 PointsWhat is the standard deviation of the data?A. 0.2 B. 26.18 C. 24.83 D. 34.61 Reset Selection What’s This? |
| Question 14 of 205.0 PointsA probability is always expressed as a value from:A. 0 and 1. B. -1 and 1. C. 0 and 100. D. 0 and 10. Reset Selection What’s This? |
| Question 15 of 205.0 PointsRecords at a high school indicate that each year for the past five years, 120 of the 1,500 students were absent on the first day of hunting season. What is the likelihood that a particular student will be absent on the first day of hunting season this year?A. 0.08 B. 0.12 C. 0.18 D. 0.20 Reset Selection What’s This? |
| Question 16 of 205.0 PointsA study of a manufacturing process indicates that 120 of 6,000 units produced are defective. If a sampler selected 100 units, how many defective units would he expect to be present?A. 2 B. 5 C. 6 D. 10 Reset Selection What’s This? |
| Question 17 of 205.0 PointsSix red balls and four blue balls are placed in a container. What is the probability that the first ball drawn from the container is blue?A. 0.286 B. 0.40 C. 0.60 D. 0.67 Reset Selection What’s This? |
| Question 18 of 205.0 PointsPlease answer questions 18-19 using the following information: Class ScoresFrequency – fLower limit < score < upper limit 20-30630-401040-501250-60860-704 What is the probability that a selected observation is between 40 and 50?A. 0.25 B. 0.30 C. 0.40 D. 0.65 Reset Selection What's This? |
| Question 19 of 205.0 PointsWhat is the probability that a selected observation is greater than 39, but less than 60?A. 0.20 B. 0.40 C. 0.30 D. 0.50 Reset Selection What’s This? |
| Question 20 of 205.0 PointsCalculate the range, variance, and standard deviation of the following data set:5, 5, 6, 6, 6, 8, 8, 8, 8, 10, 10, 11, 12, 12, 20A. Range = 15; Variance = 225; Standard Deviation = 7.5 B. Range = 3.85; Variance = 14; Standard Deviation = 3.74 C. Range = 20; Variance = 15; Standard Deviation = 4 D. Range = 15; Variance = 14.82; Standard Deviation = 3.85 |
