Question

if the mean of five observations x,x+ 2,x+4,x+6,x+8 is 13,then find the value of x.

Answer 1

mean=13

sum of observation /no. of observation =13

x+x+2+x+4+x+6+x+8/5=13

5x+20=65

5x=65-20

x=45/5

x=9

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