Math, asked by kashishrohilla000, 2 months ago

mark obtained by 10 student of a class are 13,11,8,9,9,15,16,19,20,9 find mean ,median and mode​

Answers

Answered by anumathsfiles
0

Answer:

Step-by-step explanation:

Mean = sum of observations / no of observations

= (13 + 11 + 8 + 9 + 9 + 15 + 16 + 19 + 20 + 9) / 10

= 129 / 10

= 12.9

Arranging in ascending order

8,9,9,9,11,13,15,16,19,20

Median = ( n+1) th/ 2 term = (10+1)th/2 term = 11th/2 term = 5.5 th term

= 5th term + 6th term / 2

= 11 + 13 / 2

= 24 / 2

= 12

Mode = the highest number of frequency = 9

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