Question

2. The heights of ten boys were measured in centimetres and the results were as follows:
$43, 132, 149, 148, 151, 146, 135, 128, 139, 150
( What is the height of the tallest boy?
(ii) What is the height of the shortest boy?
(iii) What is the range of the data?
(iv) Find the mean height.
(v) How many boys are there whose heights are less than the mean height?​

Answer 1

Answer:

solved below

Step-by-step explanation:

143, 132, 149, 148, 151, 146, 135, 128, 139, 150

(i) the height of the tallest boy =  151 cm.

(ii)  the height of the shortest boy =  128 cm.

(iii)  the range of the data =  151 - 128 = 23 cm.

(iv)  the mean height.  =

(143 + 132 +  149 + 148 + 151 + 146 + 135 + 128 +139 + 150)/10 = 142.1 cm.

(v) How many boys are there whose heights are less than the mean = 4 boys

Answer 2

2. The heights of ten boys were measured in centimetres and the results were as follows:

43, 132, 149, 148, 151, 146, 135, 128, 139, 150

(I)What is the height of the tallest boy?

(ii) What is the height of the shortest boy?

(iii) What is the range of the data?

(iv) Find the mean height.

(v) How many boys are there whose heights are less than the mean height?​

Answer:

solved below

Step-by-step explanation:

(143, 132, 149, 148, 151, 146, 135, 128, 139, 150)cm

(i) the height of the tallest boy = 151 cm.

(ii) the height of the shortest boy = 128 cm.

(iii) the range of the data = 151 - 128 = 23 cm.

(iv) the mean height. =

(143 + 132 + 149 + 148 + 151 + 146 + 135 + 128 +139 + 150)/10 = 142.1 cm.

(v) How many boys are there whose heights are less than the mean = 4 boys