The following observations have been arranged in ascending order. If the median of the data is $13$. Find the value of x:

     $3,6,7,10,x,x+4,19,20,25,28.$

State which of the following variables are continuous and which are discrete:

State whether the following variable is continuous or discrete :

Daily temperature of a city.

State which of the following variables are continuous and which are discrete:

State whether the following variable is continuous or discrete :

Time.

Using class intervals $0-4,5-9,10-14,\dots \dots$ construct the frequency distribution for the following data:-

Given below are the marks obtained by $27$ students in a test :-

$21,3,28,38,6,40,20,26,9,8,14,18,20,16,17,10,8,5,22,27,34,2,35,31,16,28,37.$

Given below are the marks obtained by$27$ students in a test :-