Question

Mrs Sonia to test and awarded the following marks 51,55,60,70,75,38. Later on she awarded 5 marks to each student for science project.
(i) will the average or mean marks change after the addition of 5 marks in each score
(ii) if yes describe the change​

Answer 1

Answer:

as per the table students obtained marks equal to 7 or more than equal to 7 are 5+4+3=12

hence, 12 students obtained marks equal to or more than equal to 7.

ii) as per the table students obtained marks below 4 are 2+3+3=8

hence, 8 students have obtained marks below 4.