TS EAMCET · Maths · Statistics
The variance of the following continuous frequency distribution is \(\begin{array}{|l|c|c|c|c|}\hline \text{Class interval} & 0-4 & 4-8 & 8-12 & 12-16 \\hline \text{Frequency} & 2 & 3 & 2 & 1 \\hline\end{array}\)
- A \(\frac{128}{7}\)
- B 15
- C 19
- D \(\frac{130}{7}\)
Answer & Solution
Correct Answer
(B) 15
Step-by-step Solution
Detailed explanation
\begin{array}{|l|c|c|c|c|c|}\hline C.I. & f_{\mathrm{i}} & x_{\mathrm{i}} & x_{\mathrm{i}}^2 & f_{\mathrm{X}} x_{\mathrm{i}} & f_{\mathrm{Y}}^{x_{\mathrm{i}}^2} \\\hline 0-4 & 2 & 2 & 4 & 4 & 8 \\\hline 4-8 & 3 & 6 & 36 & 18 & 108 \\\hline 8-12 & 2 & 10 & -100 & 20 & 200…
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