Question

the class marks of distribution of a class are as 105,115,125,135,145,155,165,175. find the class-size and class-intervals​

Answer 1

70= class intervals

9 = class size

Step-by-step explanation:

CLASS INTERVALS: difference between the upper-class limit and the lower class limit

175-105= 70

CLASS SIZE: find range by subtracting lowest point from highest

175-105= 70

and divide by classes

70 ÷ 8 = 8.75

round of = 9