The ages of $25$ patients who visited a dentist are given below. Prepare a frequency distribution of the data.

$$\begin{gathered} 34, 35, 39, 38, 4, 9, 15, 26, 12, 13, 25, 32, 3, 12, 39, 14, 12, 12, 24, 8, 21 ,16, \\ 5, 12, 30 \end{gathered}$$

What is the age of the youngest patient?

The ages of $25$ patients who visited a dentist are given below. Prepare a frequency distribution of the data.

$$\begin{gathered} 34, 35, 39, 38, 4, 9, 15, 26, 12, 13, 25, 32, 3, 12, 39, 14, 12, 12, 24, 8, 21 ,16, \\ 5, 12, 30 \end{gathered}$$

What is the age of patients who visited the dentist maximum number of times?

The ages of $25$ patients who visited a dentist are given below. Prepare a frequency distribution of the data.

$$\begin{gathered} 34, 35, 39, 38, 4, 9, 15, 26, 12, 13, 25, 32, 3, 12, 39, 14, 12, 12, 24, 8, 21 ,16, \\ 5, 12, 30 \end{gathered}$$

How many patients are above $30$ years of age?

Given below are the heights of $15$ students (in $\mathrm{cm}$) of class VIII of a school. Prepare a discrete frequency distribution.

$128, 130, 125, 148, 142, 130, 130, 125, 128, 130, 148, 125, 142, 130, 130$

A die was thrown $20$ times and given below are the scores. Prepare a discrete frequency distribution.

$2, 3, 1, 2, 4, 6, 5, 2, 3, 1, 4, 3 ,6, 6 ,1, 1, 2, 4, 5, 2$

The rainfall (in $\mathrm{mm}$) in a city on $7$ days of a certain week was recorded as follows:

Find the range of rainfall $\left(\mathrm{mm}\right)$ in the above data.

The rainfall (in $\mathrm{mm}$) in a city on $7$ days of a certain week was recorded as follows:

On how many days were there no rainfall?

The frequency distribution of weights (in $\mathrm{kg}$) of $35$ persons is given in the table:$$

What is the lower limit of the class $50$ - $55$?

The frequency distribution of weights (in $\mathrm{kg}$) of $35$ persons is given in the table:$$

What is the class size of the intervals?