Question

In a math test,the marks out of 10 for 10 students are;5,6,7,3,9,10,5,6,8,8
a)Find the range of the marks.
b)Find the mean of the marks
c)How many students score more than the mean marks?

Answer 1

Solution:-

Range = Highest - Lowest

= 10 - 3

= 7

Mean:-

$= \frac{sum \: of \: all \: observations}{total \: no. \: of \: observations}$

$= \frac{67}{10}$

$= 6.7$

5 students score more than mean marks.

Step-by-step explanation:

Hope this helps you.

# By Sparkly Princess

Answer 2

Answer:

a)

b)

Step-by-step explanation:

a) Range:- Highest observation - Lowest observation

= 10 - 3

= 7

b) Mean = Sum of observation

No.of observation

= 5+6+7+3+9+10+5+6+8+8

10

= 67

10

= 6.7