Ungrouped and a grouped frequency distribution
Construct both an ungrouped and a grouped frequency distribution for the data given below:
146 150 149 153 160 149 146 147 146 158
149 155 146 158 146 148 152 152 148 160
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Suppose that the mean score on a creativity test is 20 and the standard deviation is 5. You are told that the distribution is normal. Using the approximations for normal curves, how many people would get a score between 15 and 25?
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