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

Given :-

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

To Find :-

• Mean

• Median

• Mode

Solution :-

As we know that

`\bold{Mean =(Sum ~of~ 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
• Median = 8th term

Now,

• 0 appears most (3) times.
• Mode = 0

Conclusion :-

Mean = 6.04

Median = 5

Mode = 0