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What is the difference between a categorical and a numerical variable?
Categorical data (or variable) consists of names representing categories. For example, the gender (categories of male & female) of the people where you work or go to school; or the make of cars in the parking lot (categories of Ford, GM, Toyota, Mazda, KIA, etc) is categorical data. Numerical data (or variable) consists of numbers that represent counts or measurements. For example, the number of males & females where you work or go to school; or the number of the make of cars Ford, GM, Toyota, Mazda, KIA, etc is numerical data.
Data are always numerical measurements true or false?
False. For example; your name is ___________.
What does numerical data mean?
Numerical Data means data consisting of numbers, not categories, such as the heights of students.
What is a measure for a numerical data set summarizes all of its values with a single number?
Center
Which measure of central tendency is used when data is not numerical?
When the data are not numerical but can be ordered , the median may be used as a measure of central tendency. Put the data in order and choose the middle value. For example, low, medium,medium,low, high etc.
