Question

Find the mean, median and mode of the following marks of 15 students on
screening test (out of 20): 2,5, 3,3,0, 18, 5, 7, 11, 15, 1, 13, 0,8,0​

Answer 1

answer:

step by step explanation:

0,0,0,1,2,3,3,5,5,7,8,11,13,15,18

n=15(odd)

mean =0+0+0+1+2+3+3+5+5+7+8+11+13+15+18/15

• 91/15
• 6.04

Median= n+1/2

• 16/2
• 8th
• median =5

mode=0

Answer 2

Given :-

Observation

2,5, 3,3,0, 18, 5, 7, 11, 15, 1, 13, 0,8,0

To Find :-

• Mean
• Mode
• Median

Solution:-

As we know that

Mean = Sum of the observation /Total no. of observation

Mean = 2 +5 + 3 +3 + 0+ 18+ 5 + 7+ 11 + 15+ 1+13+ 0+ 8+ 0/15

➨Mean = 91/15

➨Mean = 6.04

Now,

➨Median = n + 1/2

➨Median =15 + 1/2

➨Median = 16/2

Now,

0 Appears most (3) times.

Mode = 0

Conclusion:-

➟Mean = 6.04

➟Median = 5