Question

a=50 sigma fi=35,sigma fidi=-360 then find x​

Answer 1

Mean $\large\rm{ ( \bar{x}) = A + \dfrac{ \sum f_{i} d_{i}}{ \sum f_{i}}}$

$\large\rm { \ }$

$\large\rm { \bar{x} = 50 + \dfrac{ -360}{35}}$

$\large\rm { \ }$

$\large\rm{ \bar{x} = \dfrac{278}{7} = 39.7}$ ( approx)

More to know!♡

Mean of a set of observations is the average of the given observations. To find the mean, we divide the sum of the observations by the total number of observations. The mean of a given set of data is equal to the sum of the numerical values of each and every observation divided by the total number of observations.

Answer 2

Answer:

Mean \large\rm{ ( \bar{x}) = A + \dfrac{ \sum f_{i} d_{i}}{ \sum f_{i}}}(

x

ˉ

)=A+

∑f

i

∑f

i

d

i

\large\rm { \ }

\large\rm { \bar{x} = 50 + \dfrac{ -360}{35}}

x

ˉ

=50+

35

−360

\large\rm { \ }

\large\rm{ \bar{x} = \dfrac{278}{7} = 39.7}

x

ˉ

=

7

278

=39.7 ( approx)

More to know!♡

Mean of a set of observations is the average of the given observations. To find the mean, we divide the sum of the observations by the total number of observations. The mean of a given set of data is equal to the sum of the numerical values of each and every observation divided by the total number of observations.