if in a data smallest value is 27, the largest value is 48 and the size of the class interval is 3 then the number of classes will be _________?
- 3
- 5
- 7
- 10
Explanation
To determine the number of classes, we can use the formula:
Number of classes = (largest value - smallest value) / class interval size
Given:
Smallest value = 27
Largest value = 48
Class interval size = 3
Substituting the given values into the formula:
Number of classes = (48 - 27) / 3
calculating the subtraction:
Number of classes = 21 / 3
Simplifying the division:
Number of classes = 7
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