Question

1. Use the given minimum and maximum data entries, and the number of classes, to find the class width the lower limits and upper class limit.

minimum= 10, Maximum=75, 6 Classes

2. Use the minimum as the first lower class limit and then find remaining lower class limits.

3. find upper class limits

Answer 1

	Lower Class	Upper Class	Class Width
1	10	30	20
2	30	45	15
3	45	55	10
4	55	65	10
5	65	70	5
6	70	75	5

another way.

	Lower Class	Upper Class	Class Width
1	10	15	5
2	15	25	10
3	25	35	10
4	35	45	10
5	45	60	15
6	60	75	15

Since it is not mentiond that the class width should be same, different class widths are used.

Also it is not possible to get equal class widths with the range for 6 classes.