Question

Write the lower class limit ,the upper class limit and the class marks of the following class
intervals .
40 – 60 , 0- 10 , 34 – 40

Answer 1

Answer:

lower class limit-40,0,34

upper class limit-60,10,40

class mark-50,5,37

class interval-20,10,6

Answer 2

Step-by-step explanation:

Class Interval 30-34 35-39 40-44 45-49 50-54 55-59

Frequency 7 10 12 13 8 4

a) class limit of fourth class is :- 45−49 are

45(lower limit) & 49 (upper limit)

b) class boundaries of sixth class is :- 55−54=1

=

2

1

=0.5

54+0.5=54.5

c) class mark of third class :- 40−44

=

2

40+44

=

2

84

=42

d) upper & lower limit of fifth class :- 50−54

upper limit = 54

lower limit - 50

e) size of the third class :- 40−44

difference between lower & upper limit

(44−40)=4