Distinguish between ‘quantitative’ and ‘qualitative’ data and give some examples of both.

Quantitative Data : We have quantitative data, if the variables can be measured in numerical terms. For example, daily temperature, height and weight of individuals, price and income, etc. are quantitative variables. Their values can be expressed numerically.

Qualitative Data : Sometimes, it is not possible to measure variables numerically, in the same straight forward manner as heights and weights of individuals, or prices of commodities, or income of individuals. For example, attitudes of people to a political system, intelligence of individuals and their aptitudes towards music and art, beauty of individuals or some objects (like flowers, gardens etc.) cannot be numerically measured. However, we may rank them according to the quality of their attributes.