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
|