Question

The marks (out of 100) obtained by a group of students in a Maths test are given below.
85, 76, 90, 85, 39, 48, 58, 95

Find the:
(i) Range of the marks obtained.
(ii) Mean of the marks

Answer 1

Answer:

HOOE IT HELPS YOU....

HAVE A NICE DAY

TAKE CARE

Answer 2

Step-by-step explanation:

Arranging data in ascending order

39,48,58,76,85,85,90,95

Highest marks = 95

Lowest marks = 39

(I) Rank of the marks obtained.

Rank = Highest marks- lowest marks

=95-39

= 56

(ii) Mean marks obtained by the groups

$mean \: marks = \frac{total \: marks}{number \: of \: students} \\ = > \frac{39 + 48 + 58 + 76 + 85 + 85 + 0 + 95}{10} \\ = > \frac{576}{10} \\ = > 57.6$

Thus, mean marks is 57.6 ans.