I Did this one in first year but i cant do it in college ...
For the following set of numbers
57 22 35 x 62
The mean is calculated to be 52.
What is the value of x?
Thanks for any help
To solve for x: $\displaystyle
\frac{57+22+35+x+62}{5}=52
$
Multiply both sides by 5:
$\displaystyle 57+22+35+x+62=260$
Then isolate x:
Note that $\displaystyle 57+22+35+62=176$
Thus, $\displaystyle x+176=260 \implies \color{red}\boxed{x=84}$
Does this make sense now?
--Chris