state gov TSPSC Forest Beat Officer (ఫారెస్ట్ బీట్ ఆఫీసర్) Mock Test 2023 Quantitative Aptitude Elementary Statistics
The mean of the values of 1, 2, 3, ....., n with respectively frequencies x, 2x, 3x, ...., nx is:
1
\(\rm \frac{n}{2}\)
2
\(\rm \frac{1}{3}(2n+1)\)
3
\(\rm \frac{1}{6}(2n+1)\)
4
\(\frac{n}{2}\)