Question

The weekly wages (in Rs.) of $30$workers in a factory are:

$$\begin{gathered} 830,835,890,810,835,836,869,845, \\ 898,890,820,860,832,833,855,845,804, \\ 808,812,840,885,835,835, \\ 836,878,840,868,890,806,840 \end{gathered}$$

Using tally marks, make a frequency table with intervals as $800-810,810-820$ and so on.

Answer 1

Frequency table :

The frequency table with intervals as $800–810,810–820$ and so on, using tally marks is given below:

Frequency :The number of times a particular value is repeated in the given data is called frequency .

Class -Intervals	Tally Marks	Frequency
$800-810$	$\text{III}$	$3$
$810-820$	$\text{II}$	$2$
$820-830$	$\text{I}$	$1$
$830-840$	$\cancel{\text{IIII}}$$\text{IIII}$	$9$
$840-850$	$\cancel{\text{IIII}}$	$5$
$850-860$	$\text{I}$	$1$
$860-870$	$\text{III}$	$3$
$870-880$	$\text{I}$	$1$
$880-890$	$\text{I}$	$1$
$890-900$	$\text{IIII}$	$4$
	Total	$30$