Statistics – Notes

Collection and Representation of Data

A systematic record of facts or different values of a quantity is called data.

The data collected by a researcher with a specific purpose in mind is called primary data.

The data gathered from a source where is already exists is called secondary data.

The deference between the highest and lowest value in the given data is called the range of given data.

The number of times a value occurs in the given data is called frequency of that value.

A table that shows the frequency of different values in the given data is called a frequency distribution table.