the class mark of classes in a distribution arer 6.10.14.18.22.26.30. find

a) class size

b) lower limit of second class

c) upper lmit of last class

d) third class

Question

the class mark of classes in a distribution arer 6 10 14 18 22
26 30 find
a) class size
b) lower limit of second class
c) upper lmit of last class
d) third class

Poonam Mittal · Accepted Answer

Class mark of the distribution are 6, 10, 14, 18, 22, 26, 30

(a) Class size = difference between any two consecutive class marks = 10 - 6 = 4

Now first we have to find the classes for answering the forwarded question.

We know that if a is the class mark and h is its class size then lower limit and upper limit are

$a - \frac{h}{2}, a + \frac{h}{2}$ respectively.

Lower limit of the first class interval = $6 - \frac{4}{2}$ = 6 - 2 = 4

Upper limit of the first class interval = $6 + \frac{4}{2} = 6 + 2 = 8$

Similarly we obtain the other class limits as given under.

4 - 8

8 - 12

12 - 16

16 - 20

20 - 24

24 - 28

28 - 32

(b) Lower limit of the second class = 8

(c) Upper limit of the last class = 32

(d) Third class = 12 - 16

the class mark of classes in a distribution arer 6.10.14.18.22.26.30. find a) class size b) lower limit of second class c) upper lmit of last class d) third class

the class mark of classes in a distribution arer 6.10.14.18.22.26.30. find

a) class size

b) lower limit of second class

c) upper lmit of last class

d) third class