mode, mean and median
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Can the median and mode be used to describe both categorical data and numerical data
You can use them to describe the central tendency of the data but no more than that.
It can be used to describe continuous or discreet data but not categorical or ordered data, unless that data is also numercal which is very unlikely
Non-numerical nominal characteristics can be the brands of cars we drive, the names of cities were we live, our race, religion, etc. Numerical nominal characteristics can be area codes, zip codes, numbers on the back of jerseys of basketball players. Numerical, non-nominal data is someone's weight or height.
Numerical Data means data consisting of numbers, not categories, such as the heights of students.