Question

A sample of candies have weights that vary from 2.35 grams to 4.75 grams. use this information to find the upper and lower limits of the first class if you wish to construct a frequency distribution with 12 classes.

Answer 1

we are given the range of the data that is from 2.35 grams to 4.75 grams- we can call these two the lower and upper llimits respectively. In this case, to find the first class limits, we have to divide the range into 12. The range is 2.40 grams made up of 12 parts of 0.2 grams. The first class hence limits are

lower: 2.35 g
upper: 2.35+0.2 =2.55 g