Question

The class marks of a distribution are 62, 67, 72, 77, 82 and 87. Find the class-size and class-limits.​

Answer 1

Step-by-step explanation:

Class size =67−62=72−67=5

∴ Class size =5

Class interval for first class mark is (62−2.5=59.5)−(62+2.5=64.5)

Similarly for the rest, intervals are 64.5−69.5,69.5−74.5,74.5−79.5,79.5−84.5 and 84.5−89.5

Hence, the class limits are 59.5−64.5,64.5−69.5,69.5−74.5,74.5−79.5,79.5−84.5 and 84.5−89.5