Question

The marks (out of 100) obtained by a group of students in a science test are as follows:

85, 76, 90, 85, 39, 48, 56, 95, 81 and 75

Find the

(i) highest and lowest marks obtained by the students.

(ii) range of the marks obtained by the students.

(iii) mean marks obtained by the students.

15. A ribbon of length 52.80 m is cut into smaller pieces, each of whose length is 1.65 m.

How many smaller pieces of the ribbon do we get?​

Answer 1

Answer:

i) Highest marks=95

 Lowest marks = 39

ii)  56

iii) 73

15.  ans= 32

Step-by-step explanation:

Highest and lowest marks can be observed from the given set of marks

Range is calculated as = Highest marks-Lowest marks

Mean = (Sum of all the marks)/(Total number of students)= 730/10

Whole length of ribbon is 52.80 m

Each length of ribbon is 1.65 m

Therfore number of pieces 52.80/1.65