Ask a Teacher

Search



The median of the following data is 52.5 . Find the values of x and y if total sum of the frequency is 100. C.I- 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 90-100 Frequency- 2 5 x 12 17 20 y 9 7 4

Class Interval Frequency Cumulative Frequency
0-10 2 2
10-20 5 7
20-30 x 7 + x
30-40 12.5 19 + x
40-50 17 36 + x
50-60 20 56 + x
60-70 y 56 + x + y
70-80 9 65 + x + y
80-90 7 72 + x + y
90-100 4 76 + x + y


comments powered by Disqus