Question

1. Calculate the mean, median and mode of the following numbers:
(1) 17, 19, 11, 23, 19
(ii) 7, 9, 8, 11, 8, 12, 8, 9
(iii) 2, 1, 0, 3, 1, 2, 3, 4, 3, 5
(iv) 8, 10, 7, 6, 10, 11, 6, 13, 10​

Answer 1

Answer:

1) Mean =

$\frac{17 + 19 + 11 + 23 + 19}{5} = \frac{89}{5} = 17.8$

& frequency of 19 is more than other numbers so Mode = 19.

2) Mean =

$\frac{7 + 9 + 8 + 11 + 8 + 12 + 8 + 9}{8} = \frac{72}{8} = 9$

& Mode = 8.