Question

4. Find out Median from following data?
निम्नलिखित डेटा के माध्यिका की गणना करें
Class interval
10-15
15-20
20-25
25-30
30-35
35-40
Frequency
2
3
4
5
3
2

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no random answer​

Answer 1

Step-by-step explanation:

cf ...

cf ...2

cf ...25

cf ...259

cf ...25914

cf ...2591417

cf ...2591417 20

N=20

N/2 = 20/2 = 10

10 lies between 9-14 in cf.

median class = 25 - 30

h = 5 , L= 25

cf = 9 , f = 5

so , median = L + {n/2-cf / f } × h

25 + {10 - 9 /5}×5

25 + {1/5}×5

25 + 5 /5 | & we can write, 25+1 as 5/5 is divided

125 +5 /5 | & 25+1 = 26 Ans.

130 / 5

= 26 Ans.

Note = There is a problem in frequency because total frequency is 20 not 19 .