Question

find the mean for 2,5,7,8​

Answer 1

Question :-

• Find the mean.

Data =》 2,5,7,8

Solution :-

$\sf \: mean \: = {\dfrac{~Sum~of~all~the~terms}{No.~of~terms}}$

$\sf \dfrac{ = 2 + 5 + 7 + 8}{4}$

$\sf { = \dfrac{22}{4}}$

$\sf{ = 5.5}$

$\fbox{Mean~=~5.5}$

______________________

Know more :-

▪Mode

• The no. that appears the most is mode.

• For eg :- 2,4,8,9,0,8,5,8,4,8

• Here 8 appears the most. So, 8 is the mode.

▪Median

• If n is odd,

$\sf{Median~=~\dfrac{n + 1}{2}^{th~term}}$

• If n is even,

$\sf{Median \: = \: \dfrac{1}{2}[value \: of \: (\dfrac{n}{2})^{th} \: term + value \: of \: {(\dfrac{n}{2} + 1})^{th} term]}</p><p></p><p></p><p>$

Answer 2

Answer:

The mean of the given data will be$\frac{11}{2}$.

Step-by-step explanation:

Given: $2,5,7,8$

We have to find the mean of the above data.

• As we know that, the mean of a data set is the sum of the terms divided by the total number of terms.
• The formula for mean is:

        $\text { Mean }=\frac{\text { Sum of terms }}{\text { Number of terms }}$

We are solving in the following way:

We have,

Given data is$2,5,7,8$

$\text { Sum of terms }=2+5+7+8=22\\\text { Number of terms }=4$

So, the mean of the given data will be:

$\begin{aligned}\text { Mean } &=\frac{\text { Sum of terms }}{\text { Number of terms }} \\\\\text { Mean } &=\frac{22}{4} \\\\\text { Mean } &=\frac{11}{2}\end{aligned}$