Which of the following alternatives is true?

cbse
collectionofdata

#1

(i) The class midpoint is equal to:
(a) The average of the upper class limit and the lower class limit.
(b) The product of upper class limit and the lower class limit.
© The ratio of the upper class limit and the lower class limit.
(d) None of the above.
Ans. (a)
(ii) The frequency distribution of two variables is known as.
(a) Univariate Distribution.
(b) Bivariate Distribution.
© Multivariate Distribution.
(d) None of the above.
Ans. (b)
(ii) Statistical calculations in classified data are based on
(a) the actual values of observations.
(b) the upper class limits. •,
© the lower class limits.
(d) the class midpoints.
Ans. (a)
(iv) Under Exclusive method,
(a) the upper class limit of a class is excluded in the class interval.
(b) the upper class limit of a class is included in the class interval.
© the lower class limit of a class is excluded in the class interval.
(d) the lower class limit of a class is included in the class interval.
Ans. (a) and (d)
(v) Range is the
(a) difference between the largest and the smallest observations.
(b) difference between the smallest and the largest observations.
© average of the largest and the smallest observations.
(d) ratio of the largest to the smallest observation
Ans. (a)