ICSE Class 10 Answered
Draw a cumulative frequency curve for the following frequency distribution:
C.I.
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
Frequency
5
17
22
45
51
31
20
9
From the ogive, find out lower quartile and upper quartile.
Asked by Topperlearning User | 07 Nov, 2017, 01:12: PM
Expert Answer
|
C.I. |
40-45 |
45-50 |
50-55 |
55-60 |
60-65 |
65-70 |
70-75 |
75-80 |
|
Frequency |
5 |
17 |
22 |
45 |
51 |
31 |
20 |
9 |
|
Cumulative Frequency |
5 |
22 |
44 |
89 |
140 |
171 |
191 |
200 |
On a graph paper, plot the points (40,0), (45, 5), (50, 22), (55, 44), (60, 89), (65, 140), (70, 171), (75, 191) and (80, 200) and draw an ogive as shown below:
From the ogive, we have
a)Lower Quartile, (Q1) = 
= 56
b)Upper Quartile, (Q3) = 
=66.5
Answered by | 07 Nov, 2017, 03:12: PM
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