LA4 marksYear: 2020MediumCBSE Class 10
statisticsogivecumulative-frequencymedian
Question
For the following frequency distribution, draw a cumulative frequency curve of 'more than' type and hence obtain the median value.
| Classes | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 |
|---|---|---|---|---|---|---|---|
| Frequency | 5 | 15 | 20 | 23 | 17 | 11 | 9 |
Solution
1
Plotting points (0,100), (10,95), (20,80), (30,60), (40,37), (50,20), (60,9)
+2 marks2
and joining them to get ogive
+1.5 marks3
Median =34.3 (approx)
+0.5 marks