Question

in a frequency distribution the class width is 4 and the lower limit of the first class is 10. if there are six classes, the upper limit of last class is
a) 22
b) 26
c) 30
d) 34

Answer 1

d) 34





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Answer 2

Given :

in a frequency distribution the class width is 4 and the lower limit of the first class is 10.

To Find :

if there are six classes, the upper limit of last class is

Solution:

Class width : Class width is the difference between the upper and lower boundaries of any class

Class width = 4

Lower limit of first class = 10

Upper limit = Lower limit +class width

So, Upper limit of first class = 10+4=14

So, First class = 10-14

Now lower limit of of second class = 14

So, Upper limit of second class = 14+4=18

So, Second class = 14-18

Now lower limit of of Third class = 18

So, Upper limit of Third class = 18+4=22

So, Third class = 18-22

Now lower limit of of Fourth class = 22

So, Upper limit of Fourth class = 22+4=26

So, Fourth class = 22-26

Now lower limit of of Fifth class = 26

So, Upper limit of Fifth class = 26+4=30

So, Fifth class = 26-30

Now lower limit of of sixth class = 30

So, Upper limit of sixth class = 30+4=34

So, Sixth class = 30-34

Hence the upper limit of last class is  34