Question

find the mean of the first 8 even number s​

Answer 1

$\underline{\textbf{Given:}}$

$\textsf{First 8 even numbers}$

$\underline{\textbf{To find:}}$

$\textsf{Mean of the first 8 even numbers}$

$\underline{\textbf{Solution:}}$

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

$\mathsf{Mean=\dfrac{Sum\;of\;observations}{No.\;of\;observations}}$

$\mathsf{Consider,}$

$\textsf{Sum of first 8 even numbers}$

$\mathsf{=2+4+6+8+10+12+14+16}$

$\mathsf{=2(1+2+3+4+5+6+7+8)}$

$\mathsf{=2{\times}\dfrac{8{\times}9}{2}}$

$\mathsf{=8{\times}9}$

$\mathsf{=72}$

$\mathsf{Now,}$

$\mathsf{Mean=\dfrac{Sum\;of\;8\;even\;numbers}{8}}$

$\mathsf{Mean=\dfrac{72}{8}}$

$\implies\boxed{\mathsf{Mean=9}}$

$\underline{\textbf{Find more:}}$

Find the mean of 1.2.3.4.5.6.7​

https://brainly.in/question/38142623

Answer 2

There are 8 numbers in the set. Add them all, and then divide by 8 . So, the mean is 6.75 .

hope it helps you (ʘᴗʘ✿)