Question

15) What is the mean of 20, 40, 80, 100, and 90?​

Answer 1

Answer:

66

Step-by-step explanation:

Add all scores

20 + 40+80+100+90 = 330

330 /5 = 66

Answer 2

Given,

$\[n = 20,40,80,100,90\]$

Solution,

Calculate the mean,

$\[mean = \frac{{\sum n }}{n}\]$

$\[\begin{array}{l} = \frac{{20 + 40 + 80 + 100 + 90}}{5}\\ = \frac{{330}}{5}\\ = 66\end{array}\]$

Hence the value of mean is 66.