The mean and standard deviation of 40 observations \( \mathrm{P} \)...

Channel:
Subscribers:
451,000
Published on ● Video Link: https://www.youtube.com/watch?v=4tWXcMH5s54



Duration: 5:59
0 views
0


The mean and standard deviation of 40 observations
\( \mathrm{P} \) are 30 and 5 respectively. It was noticed that two of

W these observations 12 and 10 were wrongly recorded. If \( \sigma \) is the standard deviation of the data after omitting the two wrong observations from the data, then \( 38 \sigma^{2} \) is equal to
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live




Other Videos By PW Solutions


2023-04-07The sum of the series \( \mathrm{P} \) \( \frac{3}{1^{2}}+\frac{5}{...
2023-04-07The sum of the squares of three consecutive odd \( \mathrm{P} \) nu...
2023-04-07Statement-1: For each natural number \( n \), \( \mathrm{P} \) \( (...
2023-04-07Which one is not true \( \mathrm{P} \) (1) \( n(n+1)(2 n+1) \) is d...
2023-04-07Choose the statement which is correct for all \( n \in N \). \( \ma...
2023-04-07The mean and standard deviation of 15 observations \( \mathrm{P} \)...
2023-04-07The mean of the numbers \( a, b, 8,5,10 \) is 6 and their \( \mathr...
2023-04-07The mean and standard deviation of 50 observations \( \mathrm{P} \)...
2023-04-07For every natural number \( n \) : \( \mathrm{P} \) (1) \( n2^{n} \...
2023-04-07Let \( S(k)=1+3+5+\ldots \ldots+(2 k-1)=3+k^{2} \), \( \mathrm{P} \...
2023-04-07The mean and standard deviation of 40 observations \( \mathrm{P} \)...
2023-04-07Let \( P(n): n^{2}+n \) is odd, then \( P(n) \Rightarrow P(n+1) \) ...
2023-04-07Which of the following, statement is false for the \( \mathrm{P} \)...
2023-04-07If the mean deviation about the mean of the numbers \( \mathrm{P} \...
2023-04-07The mean and variance of the data \( 4,5,6,6,7,8, x, y \) \( \mathr...
2023-04-07Let the mean and the variance of 5 observations \( x_{1} \), \( \ma...
2023-04-07Let \( P(n): n^{2}-n+41 \) is a prime number, then \( \mathrm{P} \)...
2023-04-07Let the mean and variance of 20 observations \( x_{1}, x_{2} \), \(...
2023-04-07The mean and variance of 10 observations were \( \mathrm{P} \) calc...
2023-04-07Mathematical induction is a tool or technique which \( \mathrm{P} \...
2023-04-07The mean deviation on the data \( 3,10,10,4,7,10,5 \) P from the me...



Tags:
pw