If the arithmetic mean of the following data is 7 , P then \( a+b= ...

Channel:
Subscribers:
451,000
Published on ● Video Link: https://www.youtube.com/watch?v=3UAx1ubBSMo



Duration: 3:10
2 views
0


If the arithmetic mean of the following data is 7 ,
P then \( a+b= \) \( \begin{array}{lllll}\boldsymbol{x}_{i} & 4 & 6 & 7 & 9 \\ \boldsymbol{f}_{i} & \mathrm{a} & 4 & \mathrm{~b} & 5\end{array} \)
(1) 4
(2) 2
(3) 3
(4) Cannot be determine
šŸ“²PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live




Other Videos By PW Solutions


2023-04-07The mean weight of 9 items is 15 . If one more item \( \mathrm{P} \...
2023-04-07The SD of 15 items is 6 and if each item is P decreases by 1 , then...
2023-04-07The mean deviation from the mean of the set of \( \mathrm{P} \) obs...
2023-04-07The mean of the data set comprising of 16 P observations is 16 . If...
2023-04-07The median of 100 observations grouped in classes \( \mathrm{P} \) ...
2023-04-07The average of \( n \) numbers \( x_{1}, x_{2}, \ldots, x_{n} \) is...
2023-04-07If mean and standard deviation of 5 observations \( x_{1} \), \( \m...
2023-04-07The mean and the variance of five observations are \( \mathrm{P} \)...
2023-04-07If the standard deviation of the numbers \( -1,0,1, k \) is \( \mat...
2023-04-07The mean and variance of seven observations are 8 \( \mathrm{P} \) ...
2023-04-07If the arithmetic mean of the following data is 7 , P then \( a+b= ...
2023-04-07If \( \sum_{i=1}^{9}\left(x_{i}-5\right)=9 \) and \( \sum_{i=1}^{9}...
2023-04-07A student scores the following marks in five tests: \( \mathrm{P} \...
2023-04-07A data consists of \( n \) observations: \( x_{1}, x_{2} \ldots x_{...
2023-04-07The median of the data \( 5,6,7,8,9,10 \), is \( \mathrm{P} \) (1) ...
2023-04-075 students of a class have an average height \( 150 \mathrm{~cm} \)...
2023-04-07The mean of 16 observations is 16 . If one P observation 16 is dele...
2023-04-07The mean of five observations is 5 and their \( \mathrm{P} \) varia...
2023-04-07If the sum of the deviations of 50 observations from \( \mathrm{P} ...
2023-04-07If the average of \( a, b, c \) and \( d \) is the average of \( b ...
2023-04-07The arithmetic of 12 observations is 15 . If two P observations 20 ...



Tags:
pw