Math, asked by komalpreetshergill1, 1 year ago

find median xi 5,7,9,11,13,15,17 frequency 5,7,5,8,2,3,1

Answers

Answered by asaduveshkhan
5
1,2,3,8,9,11,13,15,17

komalpreetshergill1: how explain
Answered by tardymanchester
5

Answer:

Median is 9

Step-by-step explanation:

Given : xi- 5,7,9,11,13,15,17 frequency 5,7,5,8,2,3,1.

To find : The median of the variate?

Solution :

Creating the data,

x            frequency              cumulative frequency

5                 5                                       5

7                 7                                       5+7=12

9                 5                                       12+5=17

11                8                                       17+8=25

13                2                                      25+2=27

15                3                                      27+3=30

17                1                                       30+1=31

Cumulative frequency is adding the frequency.

Total frequency = 5+12+17+25+27+30+31=147

N=31

\frac{N}{2}=\frac{31}{2}=15.5

From T_{13} \text{ to } T_{17}

x_i=9

Median is

T_{15.5}=\frac{T_{15}+T_{16}}{2}

T_{15.5}=\frac{9+9}{2}

T_{15.5}=\frac{18}{2}

T_{15.5}=9

So, Median is 9.

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