Question

The weights (in kg Jof 15 students are as follows: 34, 36, 39, 45, 30, 36, 33, 37, 36, 31, 38, 36, 46, 47,44
(1) find the mean weight.
(2) find the median weight
(3) find the mode.​

Answer 1

Answer:

Solution:

Let us arrange the data in ascending order

32,35,36,37,38,38,38,40,42,43,43,43,45,47,50.

i) Mode = 38 and 43 as they occured the maximum number of times

Median = \left(\frac{n+1}{2}\right)^{th}\

n = 15

\frac{15\ +\ 1}{2}

= \frac{16}{2\ }\ =\ 8th\ term

8th term = 40

Thus, mode of the data is 38 and 43

Median = 40

ii) Yes, the given data has two modes.

Answer 2

Step-by-step explanation:

1. 34+36+39+45+30+36+33+37+36+31+38+36+46+47+44 =568

Divide 568 by the total number of terms

568 ➗ 15. = 37.86

2.Arrange the numbers in ascending order

Median = 36.

3. Mode =36