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Unformatted text preview: during the study. I. What is the population? II. What is the sample? III. Is the study observational or experimental? Justify your answer. IV. What are the variables? V. For each of those variables, what level of measurement (nominal, ordinal, interval, or ratio) was used to obtain data from these variables? (Points : 12) 3. Construct both an ungrouped and a grouped frequency distribution for the data given below: 139 130 128 134 140 139 136 130 136 128 138 137 134 128 127 136 140 132 141 138 (Points : 10) 4. Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work. Class Frequen cy 5658 22 5961 14 6264 24 6567 19 6870 19...
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 Winter '11
 STEVEJOSEPH

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