To form a __________ we form a ratio between each frequency and the total number of scores in the set.
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Please use the following to answer questions 2-3:
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What is the relative frequency of the 20–40 class?
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What is the percent frequency of the 60-80 class?
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For 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, 29 What is the arithmetic mean of the data?
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What is the trimmed mean of the data?
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What is the median of the data?
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What is the mode of the data?
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Sample data on employee age for a large auto parts manufacturer are as follows:
What is the mean age of the employees?
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A survey of the number of television sets per household in a city yielded the following results:
What is the trimmed mean of the number of televisions per household?
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For questions 10-13, use the following data:
13 29 41 60 89 14 26 53 7 14 What is the arithmetic mean of the data?
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What is the variance of the data?
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What is the standard deviation of the data?
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A probability is always expressed as a value from:
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Records 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?
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A 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?
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Six 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?
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Please answer questions 18-19 using the following information:
What is the probability that a selected observation is between 40 and 50?
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What is the probability that a selected observation is greater than 39, but less than 60?
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Calculate 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, 20
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