Question

Find the mean of 1.2.3.4.5.6.7​

Answer 1

$\textbf{Given:}$

$\textsf{Data is}$

$\mathsf{1,2,3,4,5,6,7}$

$\textbf{To find:}$

$\textsf{The mean of the given data}$

$\textbf{Solution:}$

$\underline{\textsf{Formula used:}}$

$\textsf{The Arithmetic mean of first n natural numbers is}$

$\mathsf{\dfrac{n+1}{2}}$

$\mathsf{Consider,}$

$\mathsf{1,2,3,4,5,6,7}$

$\textsf{These are first 7 natural numbers}$

$\boxed{\mathsf{Mean=\dfrac{n+1}{2}}}$

$\implies\mathsf{Mean=\dfrac{7+1}{2}}$

$\implies\mathsf{Mean=\dfrac{8}{2}}$

$\implies\boxed{\mathsf{Mean=4}}$

$\textbf{Find more:}$

the mean of 4 observations is 5 and the mean of 6 observation is 3 then find the mean of total 10 observations​

https://brainly.in/question/38607618

Answer 2

Given:

1.2.3.4.5.6.7

To Find:

Mean

Solution:

To find the mean, first, we need to add the given data then divide it with total observations.

1.2.3.4.5.6.7

Sum of the given data:

=> 1 + 2 + 3 + 4 + 5 + 6 + 7

=> 28.

Total observations: 1.2.3.4.5.6.7 = 7

Finding Mean :

$mean \: = \dfrac{sum \: of \: observations}{total \: observations}$

$= > \dfrac{28}{7}$

$= > 4$

Hence, The mean of the given data is 4