Question

143. 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 1

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Answer 2

(i) 151, (ii) 128, (iii) 23, (iv) 142.1, and (v) 4 are the correct answers.

Step-by-step explanation:

(i) 151  is the height of the tallest boy because it is greater among all heights.

(ii) 128 is the height of the shortest boy because which lesser among the all heights.

(iii) The range of data is = Highest height - Lowest height = 151 - 128 =23.

23 is the range of the data.

(iv) Mean of height =  $\frac{Sum of observations}{Total number of observations}$.

$\frac{143+132+149+148+151+146+135+128+139+150}{10}$ = $\frac{1421}{10}$ = 142.1.

(v) 132, 135, 128, and 139 are the heights whose heights are less than the mean height. Hence, totally 4 boys are of lesser height than the mean height.

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