Question

i want these answers fast first answer will be marked as brainliest but the answer should be explaine step by step​

Answer 1

i) mean mark of student A

=3+5+9+7/4(sum of observations divided by number of observations)

=24/4=6

mean mark of student B=8+7+0+6/4=21/4=5.25

mean mark of student C=

10+9+0+9/4=

7

ii) student C

iii) student B