ICSE Class X Math 2016 Solved Paper
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The table shows the distribution of the scores obtained by 160 shooters in a shooting competition. Use a graph sheet and draw an ogive for the distribution.
(Take2 cm = 10 X c m = 20 Y
Use your graph to estimate the following :
(Take
| Scores | No. of shooters |
|---|---|
| 0-10 | 9 |
| 10-20 | 13 |
| 20-30 | 20 |
| 30-40 | 26 |
| 40-50 | 30 |
| 50-60 | 22 |
| 60-70 | 15 |
| 70-80 | 10 |
| 80-90 | 8 |
| 90-100 | 7 |
Use your graph to estimate the following :
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Question : 31
Total: 57
The interquartile range. .
Solution:
Lower quartile
Q 1 = (
) th term
= (
) th term
= 40 th term = 28.5
Upper quartile
Q 3 = (
) th term
= (
) th term
= 120 th term = 60
Inter quartile range
= Q 3 − Q 1
= 60 − 28 .5 = 31 .5
Upper quartile
Inter quartile range
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