• Multivariate
• Univariable
• Bivariable
• Both (a) and (b)

• The average of the upper class limit and the lower class limit.
• The ratio of the upper class limit and the lower class limit.
• The product of upper class limit and the lower class limit
• None of these.

•  Bivariable disrtibution
• Univariable distribution
• Multivariate distribution
• None of above

• The lower class limit of a class is included in the class interval
• The upper class limit of a class is excluded in the class-interval
• 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.

What is meant by classification ?