Question

mode and median are 15 for (10,15,20,25,15,X) data.find X

Answer 1

This is the answer of your question....

Answer 2

Mean of the given data is (10+15+20+25+15+x)/6=(85+x)/6
We have,mode =3median-2mean
15=3(15)-2[(85+x)/6]
(15-45)×6=-2(85+x)
(-180)/(-2)=85+x
90=85+x
x=90-85
x=5
Therefore,the value of x is 5.