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​

ity/rsfb/tdh

Answer 1

150 +162 +138 ÷2=150 is the answer

Answer 2

Answer:

Average height is $150\ cm$ and range of height is $24$ cm .

Step-by-step explanation:

To find : average height and range of height .

Given :  height of 3 children in the class are 150 cm , 138 cm and 162 cm .

Solution :

• Average is the arithmetic mean.
• It is the ratio of sum of all the numbers given in data to the total number of observations.
• Formula: $Average =\frac{\text { sum of all the observations }}{\text { total of observations }}$
• Here, sum of observations $= 150 + 138 + 162 = 450$
• Total number of observations $=3$
• Substituting values in above formula,     $\begin{array}{r}\text { Average }=\frac{450}{3} \\=150\end{array}$

• Average height is $150\ cm$ . Now , range is given by subtracting lowest value from the highest value .

• Range = highest value - lowest value

                    $= 162 - 138 \\= 24$