Question

the height of ten boys were measured in centimetres and the results were as follows :
143, 132, 149, 148, 151, 146, 135, 128, 139, 150
What is the height of the tallest boy?
w What is the height of the shortest boy?
) What is the range of the data?
iv) Find the mean height.
iv) How many boys are there whose heights are less than the mean height?​

Answer 1

Answer:

Step-by-step explanation:

*(¡)THE HEIGHT OF TALLEST BOY=151CM

(¡¡)THE HEIGHT OF SHORTEST BOY=128CM

(¡¡¡)RANGE OF DATA

HIGHEST VALUE-LOWEST VALUE

151CM-128CM=23CM

(¡v)MEAN HEIGHT=SUM OF ALL OBS÷TOTAL OBS

1421/10=142.1CM

V) BOYS OF 128 ,132,135,139 HAS THE HEIGHT BELOW THE MEAN HEIGHT

MARK AS BRAINLIEST

Answer 2

$\star\small\sf\underline\blue{Explanation:-}$

⠀⠀⠀⠀⠀⠀⠀⠀

Arranging the data in ascending order:

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

______________________

$\star\small\sf\underline\blue{Question\:1:-}$

⠀⠀⠀⠀⠀⠀⠀⠀⠀

• What is the height of the tallest boy?

______________________

$\star\small\sf\underline\blue{AnswEr:-}$

⠀⠀⠀⠀⠀⠀⠀⠀⠀

• The height of the tallest boy is 151 cm.

______________________

$\star\small\sf\underline\blue{Question\:2:-}$

⠀⠀⠀⠀⠀⠀⠀⠀⠀

• What is the height of the shortest boy?

______________________

$\star\small\sf\underline\blue{AnswEr:-}$

⠀⠀⠀⠀⠀⠀⠀⠀⠀

• The height of the shortest boy is 128 cm.

______________________

$\star\small\sf\underline\blue{Question\:3:-}$

⠀⠀⠀⠀⠀⠀⠀⠀⠀

• What is the range of the data?

______________________

$\star\small\sf\underline\blue{Solution:-}$

⠀⠀⠀⠀⠀⠀⠀⠀⠀

${\underline{\boxed{\sf{Range = Highest \:observation - Lowest\: observation}}}}$

$\leadsto \sf {Range = 151 - 128}$

$\leadsto \sf{Range = 23}$

______________________

$\star\small\sf\underline\blue{Question\:4:-}$

⠀⠀⠀⠀⠀⠀⠀⠀

• Find the mean height.

______________________

$\star\small\sf\underline\blue{Solution:-}$

⠀⠀⠀⠀⠀⠀⠀⠀

$\sf Mean \: height = \dfrac{128 + 132 + 135 + 139 + 143 + 146 + 148 + 149 + 150 + 151}{10} \\ \\ \sf Mean \: height = \cancel \dfrac{1421}{10} \\ \\ \sf Mean \: height = 142.1 \: cm$

______________________

$\star\small\sf\underline\blue{Question\:5:-}$

⠀⠀⠀⠀⠀⠀⠀⠀⠀

• How many boys are there whose heights are less than the mean height?

______________________

$\star\small\sf\underline\blue{AnswEr:-}$

⠀⠀⠀⠀⠀⠀⠀⠀⠀

• There are 4 boys whose heights are less than the mean height.

______________________