Grouped Frequency Tables

Q. The number of employee in an organization according to their ages are grouped as below,

Age - Group (Years)	Number of Employees
$21-24$	$02$
$24-27$	$14$
$27-30$	$02$

Which age group employees are maximum in the organization?

1. $24-27$ years
2. $27-30$ years
3. $21-24$ years
4. None of the above.

Q. Cristina asked $150$ people the amount of water they drink in one day. The grouped frequency table for the amount of water people drink in one day is given below:

people drank less than $0.5$ liters of water a day and people drank between $1.5$ liters and $2.5$ liters a day.

Q. There are two shops that sell mobile phones of different price range and the data is given below. Mobile Price Range ($\$$) Shop A Shop B $400-500$ $500-600$ $600-700$ $700-800$ $800-900$

$123$	$342$
$232$	$374$
$122$	$394$
$166$	$329$
$187$	$322$

How many mobile phones are sold by both the shops in price range $\$500-\$700$ in total?

1. $1,122$
2. $354$
3. $606$
4. $768$

Q. Which of the following is an example of grouped frequency distribution?

1. 
2. 
3. 

Q. The below data show the weight (in lb) of $28$ students in a class.


Which of the following is false?

1. $4$ students have weight in $45\le \text{W}\le 54$.
2. $12$ students have weight in $55\le \text{W}\le 64$
3. $7$ students have weight in $65\le \text{W}\le 74$
4. $4$ students have weight in $75\le \text{W}\le 84$

Q. The below data signify the weight (in lb) of $28$ students in a class.

The range of the given weights is .

Q. Grade $6$ students participated in the Physics test. The class teacher prepared the data of the test as shown below:


If the passing marks is $40$, then how many students have failed the test?

1. $28$
2. $19$
3. $31$
4. $7$

Q. In grouped frequency data, the span of each interval is

1. Difference between upper limit and lower limit of each range.
2. Sum of upper limit and the lower limit of the data set.

Q. The difference between the maximum and the minimum fraction of total test scores of a student is 2/7

1. False
2. True

Q.
In the data given below, the number of data values in the interval $25-30,35-40\text{and}50-55$ are , , , respectively.