In the __________ every individual has an equal chance of being selected and the individuals who are selected are just like the ones who are not selected.

___________ are used for comparing two or more sets of data.

In ___________ the data are classified with reference to geographical locations such as countries, states, cities districts etc.

___________, the most widely used measure of dispersion, is based on all values.

__________ does not mean causation.  It only means co variation.

A ___________ is a useful technique for visually examining the form of relationship, without calculating any numerical value.

Ogives can be helpful in locating graphically the

__________ shows how different values of a variable are distributed in different classes along with their corresponding class frequencies.

A ____________ covers only a few elements of the total population 

___________ is the value which occurs most frequently.