2. Represent
the following data using frequency curve:
|
Electricity
bill in a
month (in Rs.)
|
200 – 400
|
400 – 600
|
600 - 800
|
800 – 1000
|
|
No. of Families
|
362
|
490
|
185
|
63
|
Solution :
For drawing a
frequency curve without histogram, the class mark preceding he first class is
100 with frequency zero and the class mark succeeding the last class is 1100
with frequency zero.
|
Electricity
bill in
a month (in Rs. )
|
Class mark
|
No. of
Families.
|
|
0 – 200
|
100
|
0
|
|
200 – 400
|
300
|
362
|
|
400 – 600
|
500
|
490
|
|
600 – 800
|
700
|
185
|
|
800 – 1000
|
900
|
63
|
|
1000 – 1200
|
1100
|
0
|
