Determine the median and the first and third quartile of the data given below.
Class Interval
0-10,
10-20,
20-30,
30-40,
40-50,
50-60,
60-70,
70-80
Frequency
3,
10,
17,
7,
6,
4,
2,
1
Answers
Answered by
4
Step-by-step explanation:
CI F CF
0-10 3 3
10-20 10 13
[20-30 17 30]
30-40 7 37
40-50 6 43
50-60 4 47
60-70 2 49
70-80 1 50
€F = 50
Median class = n/2 => 50/2 => 25
Median = l1 + n/2 - CF × H
---------------
F
= 20 + (25 - 13)/20 × 10
= 20 + 2.4
= 22.4
Similar questions