Question

1. 140 students participated in a knowledge retrieval session. 25 scored 90 out of 100; 63

scored 80 out of 100; 31 scored 70 out of 100; 15 scored 60 out of 100: 6 scored 50 on the
knowledge retrieval session. Determine the average score on this knowledge retrieval
session. Show all work.

Answer 1

76.14

Step-by-step explanation:

The average will be the sum of all the marks that the students scored out of a hundred divided by the number of students.

25 scored 90

63 scored 80

31 scored 70

15 scored 60

6 scored 50

all the mentioned marks are out of hundred

Thus the average is given by

`(25* 90+63* 80+31* 70+15* 60+6* 50)/(140)=76.14`

The average score of the students is 76.14.