The cumulative frequency of the largest observed value must always be

Consider the following statements in terms of histogram:

I. The histogram is a suitable representation of a frequency distribution of a continuous variable.

II. The area included under the whole histogram is the total frequency.

Which of the above statement(s) is / are correct?

Which of the following statements is/are correct with respect to the regression coefficients?

$\mathrm{I}$. It measures the degree of linear relationship between two variables.

$\mathrm{II}$. It gives the value by which one variable changes for a unit change in the other variable.

Select the correct answer using the code given below.