Chiki4idn
Answered

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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​

Sagot :

Lucky75idn

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

[tex]\bold{Mean =\dfrac{Sum ~of~ observation}{Total ~no. of~ Observation}}[/tex]

  • 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

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