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exam1review - STAT 350E Yan Ling 1 Statistical inference...

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STAT 350E-- Yan Ling EXAM 1 REVIEW 1. Statistical inference a. refers to the process of drawing inferences about the sample based on the characteristics of the population b. is the same as descriptive statistics c. is the process of drawing inferences about the population based on the information taken from the sample d. is the same as a census 2. Since a sample is a subset of the population, the sample mean a. is always smaller than the mean of the population b. is always larger than the mean of the population c. must be equal to the mean of the population d. can be larger, smaller, or equal to the mean of the population 3 . The grades of 10 students on their first management test are shown below. 94 61 96 66 92 68 75 85 84 78 a. Construct a frequency distribution. Let the first class be 60 - 69. b. Construct a cumulative frequency distribution. c. Construct a relative frequency distribution. d. Construct a cumulative relative frequency distribution.
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