Question

marks scored by seven students are 20,15,10,42,11,19,28. Find the mean marks​

Answer 1

Answer:

20.174

Step-by-step explanation:

= 20+15+10+42+11+19+28

___________________

7

= 145

___

7

= 20.174

Answer 2

$\huge\orange{Answer}$

$\\ mean = \frac{sum \: of \: observations}{number \: of \: observations}$

$</p><p>$

$= > \frac{20 + 15 + 10 + 42 + 11 + 19 + 28}{7}$

$= > \frac{145}{7}$

Therefore, mean = 20.174

Hope it helps u