Question

Find the mean, median and mode for the following data.
10. 15. 18. 10. 10. 20. 10. 20. 15. 21. 15.25​

Answer 1

Answer:

1. median:

10,10,10,10,15,15,15,18,20,20,21,25

: 15

1. mode :

most repeating number

10

1. mean :

sum. of observation \ no. of observations

10+15+18+10+10+20+10+20+15+21+15+25

189/12

15.75

Answer 2

Answer:

Mean = Sum of all observations/ Total no. of observations

$= \frac{(10 + 15 + 18 + 10 + 10 + 20 + 10 + 20 + 15 + 21 + 15 + 25)}{12}$

$= \frac{189}{12}$

$= 15.75$

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Mode = Maximum no. of repeated observations = 10

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

Median = Mid value when arranged in ascending order

10, 10, 10, 10, 15, 15, 15, 18, 20, 20, 21, 25

Median = 15 + 15 / 2 = 30/2 = 15