Question

The Marks obtained by 20 students of a class in a test out of 20 marks are given below. Find the mean, median, mode and range of the observations
20 15 12 16 15 14 10 14 17 12 11 9 15 15 10 18 11 12 15 19

Answer 1

Step-by-step explanation:

mean = 20 +15+ 12 +16 +15 +14+ 10+ 14+ 17+ 12+ 11+ 9 +15 +15 +10 +18 +11 +12 +15+ 19/ 20

= 280/20

= 14

median=9,10,11,11,12,12,12,14,14,15,15,15,15,15,16,17,18,19,20

= 15

mode = 15

range = 20 - 9

= 11

I hope you get your answer

Answer 2

Answer:

hiya is correct. prefer her answer to it Question