Consider the following for the four (04) items that follow:
The frequency distribution of height of students of a class is given below:

Height (in cm	Number of Students
160-162	12
162-164	15
164-166	24
166-168	13

 

What is the height of the class?

Consider the following for the four (04) items that follow:
The frequency distribution of height of students of a class is given below:

Height (in cm	Number of Students
160-162	12
162-164	15
164-166	24
166-168	13

 

The height which occurs most frequently in the class is

Consider the following for the four (04) items that follow:
The frequency distribution of height of students of a class is given below:

Height (in cm	Number of Students
160-162	12
162-164	15
164-166	24
166-168	13

 

The most appropriate graphical representation of the given frequency distribution is

Consider the following for the two (02) items that follow:
The sum and the sum of squares of the observations corresponding to length X (in cm) and weight Y (in gm) of 50 tropical tubers are given as $\Sigma X = 200, \Sigma Y = 250, \Sigma X^2 = 900$ and $\Sigma Y^2 = 1400$

Which one of the following is correct?