Question

In a frequency distribution with classes 0 –10, 10 –20 etc., the size of the class intervals is 10. The lower limit of fourth class is


Can anyone ans this briefly

Answer 1

Answer:30isthe lower limit of the fourth class

As it is given that the size of the class is 10

First interval: 0+10/2=5

10+20/2=30/2=15

So third will be 20+x/2=25

20+x=25×2

x=50-20

x=30third interval end with 30

Thus as we know that the last interval will be the first interval of another class