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given that the range of scores on an Introduction to Psychology test is 60, what class interval size would produce 12 class intervals?
12. in a distribution of IQ scores, the high score is 132 and the low score is 65. Compute the range, then choose an appropriate class interval size and create the apparent limits of the class intervals of a grouped frequency distribution that could be used to represent these scores.

2007-04-11 16:46:15 · 1 answers · asked by Anonymous in Science & Mathematics Mathematics

1 answers

The answer to your first question is 60/12= 5.
The answer to your second question is a range of 132-65=67. If you chose to have 11 class intervals your interval size would be approximately 6, because 67/6=11.166.

2007-04-11 17:29:20 · answer #1 · answered by bruinfan 7 · 0 0

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