Question

The height of 3 children in the class are 150 cm , 138 cm and 162 cm respectively. Find the average height and range of height.​

Answer 1

$\large \pink{ \underline{answer}}$

Avg height

= 150 + 138 +

= 162/3 = 540/3

= 180

range = 162

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Answer 2

Step-by-step explanation:

$\mathfrak{ \red{Given : }}$

Height of 3 children in the class are 150 cm , 138 cm and 162 cm .

$\mathfrak{ \red{To \: find : }}$

The average height and range of height .

$\mathfrak{ \red{Solution :}}$

Formula used :

$\sf \: Average =\frac{{ sum \: of \: all \: the \: observations }}{{ total \: of \: observations }}$

Here,

the sum of observations

= 150 + 138 + 162

= 450

=150+138+162

=450

Total number of observations =3

By substituting values in above formula,

$\sf { Average }=\frac{450}{3} \\ \sf=150$

Average height is 150 cm .

Now , range is given by subtracting lowest value from the highest value .

Range = highest value - lowest value

=162−138

=24