Question

The base is one greater than the amount. If the percentage is 93.75, then find the amount and the base.

Answer 1

Answer:

Answer:

Average = 150cm

Range = 24cm

Explanation:

Given heights of 3 children in a class are 150cm, 138cm and 162cm respectively.

Find the average and the range of the height.

Average height of the class is given by,

\rm = \dfrac{sum \: of \: the \: heights}{number \: of \: the \: children}=

numberofthechildren

sumoftheheights

= \dfrac{150 + 138 + 162}{3}=

3

150+138+162

= \dfrac{450}{3}=

3

450

\rm = 150cm=150cm

∴ Average height in the class is 150cm.

Now,

We know that,

Range of a data is the difference between the highest and the lowest values.

Here, Highest and the lowest values are 162 and 138cm respectively.

∴ Range = 162 - 138

= 24cm

∴ Range of the data is 24cm