There are 4 main data types. These are nominal data, ordinal data, interval data and ratio data. Nominal data consist of name categories and is ordered. Ordinal data is usually data collected of non numerical categories, the key for ordinal data is to use order. Interval data is collection of numerical data which has value and can be differentiated.Ratio data is similar to interval data, it uses numerical values and can tell and differentiate between numerical values and units. However it does have meaningful zero point. This zero is the absence of whatever is being measured.
The main point of the lecture pod would be learning to differentiate the types of data and what types of data can be collected from using one of these types of data.