Question

Mean of 5, 25, 8, x, 34, 12, 20 is 2 more than their median, given 12 <x< 20. So find
their mean and median.​

Answer 1

Answer:

median =  15

mean = = 17

Step-by-step explanation:

5, 25, 8, x, 34, 12, 20

as 12 < x <20

so in ascending order = 5 < 8 < 12 < x <20 <25 <34

so the median is x as it is coming exactly between

mean = (5+8+12+x+20+25+34)/7

2 + x = (104+ x)/7

(2+x)*7 = 104+x

14 + 7x = 104 + x

7x-x = 104-14

6x = 90

x = 90/6 = 15

so median = x = 15

and mean = 2+x = 2+ 15 = 17

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