ABSTRACT

The data collected by researchers tor analysis and drawing inferences and conclusions are called raw data. Examples follow.

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Populations in various locations Names and expenditures of different people Grain yield/ha of different farms Grade point average of the students in a school Rainfall distribution in a place Sales in a department store on different days of a month Import and export of different commodities of a country Daily maximum or minimum temperature in a place in different months Number of patients admitted in a hospital during different days of a week/month/year Height or weight of students Number of students admitted to a college according to their nation­ alities Farm size of different farms in a district Milk yield of a cow on different days of a month in a dairy

Characteristics of the data in these examples all include observations in each category that exhibit variation or variability. The characteristics that show variation are hence called variables.