TS EAMCET · Maths · Statistics
The mean and standard deviation of 100 observations were calculated as 40 and 5.1 respectively. Later on it was found that one of the observations was taken as 50 in the place of 40 . If the wrong entry is replaced by the correct one, then the sum of the squares of all the observations is
- A 162701
- B 163501
- C 162601
- D 161701
Answer & Solution
Correct Answer
(D) 161701
Step-by-step Solution
Detailed explanation
\(\bar{x}=40\) \(\begin{aligned} & \sigma=5.1 \\ & n=100\end{aligned}\) Mean \(=\frac{\sum x_i}{n}=40\)…
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