If the mean of the data 2,x+1,9,x-2 is 4 then find the value of x.
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Answered by
14
Mean=Summation of all observations/Total no.of observations
Mean=2+x+1+9+x-2/4
4=10+2x/4
4×4=10+2x
16=10+2x
16-10=2x
6=2x
6/2=x
3=x or x=3
Answered by
0
Answer:
3
Step-by-step explanation:
Mean=Summation of all observations/Total no.of observations
Mean=2+x+1+9+x-2/4
4=10+2x/4
4×4=10+2x
16=10+2x
16-10=2x
6=2x
6/2=x
3=x or x=3
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