How do I find the value of x such that the data set has the given mean.
Example: 11,12,5,3,x;
Mean=7.4
2 answers
sum=(7.4)5=37. 37-11-12-5-3=x=6.
(11+12+5+3+x)/5=7.4
31+x/5=7.4
Multiply both sides by 5
31+x=37
x=6
31+x/5=7.4
Multiply both sides by 5
31+x=37
x=6