Question

find the mean of 10. 25, 9, 4.75 8 2.65 12 2.35 ​

Answer 1

$\huge\sf{Answer:-}$

Sum of observation = 10.25 + 9 + 4 + 4.75 + 82.65 + 12 + 2.35 = 125

To find the mean now divide 125 the observation numbers.

$\sf \frac {Mean = 10.25 + 9 + 4.75 + 8 + 2.65 + 12 + 2.35} {7}$

$\sf =\frac{49} { 7}$

$\sf = 7$

Therefore , 7 is the mean.

Answer 2

Answer:

The arithmetic mean of the given data is 7.

Step-by-step explanation:

Given Data -

10.25, 9, 4.75 8 2.65 12 2.35 ​.

To Find -

The mean of the give data.

Solution -

Firstly let us know.

• What is mean?
• What is Mode?

★ Mean -

The term mean is the average of a set of numbers.

★ $\color{blue}{\boxed{\sf \bar{X} = \dfrac{\sum x}{n}}}$

★ Mode -

The term mode is a number which appears most often in a set of numbers.

Now, Coming to your Question,

As we know,

Arithmetic Mean -

$\bigstar\;\boxed{\dfrac{\textsf{Sum of all observations}}{\textsf{Number of observations}}}}$

We can also write it as -

$\color{blue}{\boxed{\sf \bar{X} = \dfrac{\sum x}{n}}}$

We have,

Observations = 10.25, 9, 4.75, 8, 2.65, 12, 2.35.

Number of Observations = 7

So,

$\sf\\ \implies \dfrac{10.25 + 9 + 4.75 + 8 + 2.65 + 12 + 2.35}{7}$

$\sf\\ \implies \dfrac{49}{7}$

$\sf \implies 7$

Hence, The arithmetic mean of the given data is 7.