Question

A boy scored the following marks in various class tests, each test being marked out of 20 marks.15, 17, 16, 7, 10, 12, 14, 16, 19, 12, 16(a)What are his mean marks?(b)What are his median marks?(c)What are his modal marks?

Answer 1

Answer:

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Answer 2

Answer:

mean is 14

median is 15

mode is 16

Step-by-step explanation:

1) arrange un asending order :

7, 10, 12, 12, 14, 15, 16, 16, 16, 17, 19

2) no.of observation is 11

3) mean is sum of observation/ no.of observation

7+10+12+12+14+15+16+16+16+17+19/11 = 154/11 =14

4)median is n+1÷2

11+1÷2 is 6th term that is 15

5) mode is maximum occurring no. that is 16