Question

find the mean of the following data
40,50, 65, 70, 75​

Answer 1

Hope it helps!! Mark this answer as brainliest if u found it useful and follow me for quick and accurate answers...

Answer 2

Given:

The set of given numbers are

40, 50, 65, 70, 75

To find:

Mean of the following data = ?

Solution:

For finding mean of such ungrouped data, we use the below formula:

$\sf{Mean = \dfrac{Sum \: of \: all \: observations}{Total \: number \: of \: observations} }$

$\dashrightarrow \: \sf{Mean = \dfrac{40 + 50 + 65 + 70 + 75}{5} }$

$\dashrightarrow \: \sf{Mean = \dfrac{300}{5} }$

$\therefore \: \boxed{ \bf{Mean = 60}}$

KNOW MORE:

There are mainly 3 measures of Central tendancy. These include:

1. Mean which is commonly known as average.
2. Median which is simply known as the middle-most value.
3. Mode which is the most frequently repeated observation.
4. For finding mean of groped data the formula used is:

Mean = Σfixi ÷ Σfi