SSC Selection Post 2024 PYQ — Question 55

The correct answer is Option 4 i.e. The sum of deviations of the items from the arithmetic mean is always zero.

Let values be x₁, x₂,...,x_n

Let the arithmetic mean = $\bar{x}$

then,

$\sum(x_i-\bar x)$ = 0

So, the sum of deviations of the items from the arithmetic mean is always zero is correct.