Suppose that the largest value in a set of data is 99, and the lowest value is 20. If the resulting frequency distribution is to have five classes of equal width, the class width should be 16.

Question

Quizplus · Accepted Answer

The class width is calculated by dividing the range (largest value - lowest value) by the number of classes. In this case, the range is 99 - 20 = 79, and the number of classes is 5. Therefore, the class width is 79 / 5 = 15.8. Rounding up to the nearest whole number, the class width should be 16.

Suppose That the Largest Value in a Set of Data