Consider the following distribution:
\begin{tabular}{llllll} Size \( \left(x_{i}\right) \) & 20 ....
Consider the following distribution:
\begin{tabular}{llllll}
Size \( \left(x_{i}\right) \) & 20 & 21 & 22 & 23 & 24 \\
Frequency \( \left(f_{i}\right) \) & 6 & 4 & 5 & 1 & 4
\end{tabular}
\( \mathrm{P} \)
The variance of the given data is:
(1) 2.5
(2) 2.1275
(3) 3
(4) 2.75
.
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