Question

The lengths in centimeters (to the nearest centimeter) of$30$carrots are given as follows $22\mathrm{cm}$

$15,22,21,20,22,15,15,20,20,15,20,18,20,22,21,20,21,18,21,18,20,18,21,18,22,20,15,21,18,20$

Arrange the data given above in a table using tally marks and answer the following questions.

What is the number of carrots which have a length of more than $20\mathrm{cm}$?

Answer 1

A table with tally marks from the given information is shown below :

Length of carrots (in cm)	Tally Marks	Number of carrots
$15$	$\cancel{\left|\right|\left|\right|}$	$5$
$18$	$\cancel{\left|\right|\left|\right|}$ $|$	$6$
$20$	$\cancel{\left|\right|\left|\right|}$ $\left|\right|\left|\right|$	$9$
$21$	$\cancel{\left|\right|\left|\right|}$ $|$	$6$
$22$	$\left|\right|\left|\right|$	$4$

Number of carrots having a length more than $20\mathrm{cm}=$number of carrots having length $21\mathrm{cm}$$+$ number of carrots having a length $22\mathrm{cm}$

$$\begin{gathered} =6+4 \\ =10 \end{gathered}$$

Hence, the number of carrots having a length of more than $20\mathrm{cm}=10$