A researcher wants to determine whether number of miles/week students travel by car is associated with college major (1 = Environmental Studies, 2 = Humanities/Social Science, 3 = Sciences/Health; 4 = Arts; 5 = Business). In this example, distance traveled by personal car is measured using a blank scale while college major is measured using a blank scale. Nominal Ordinal Descriptive Equal interval/ Ratio
A researcher wants to determine whether number of miles/week students travel by car is associated with college major (1 = Environmental Studies, 2 = Humanities/Social Science, 3 = Sciences/Health; 4 = Arts; 5 = Business).
In this example, distance traveled by personal car is measured using a blank scale while college major is measured using a blank scale.
Nominal Ordinal Descriptive Equal interval/ Ratio
Nominal variable: The categorical variable which can be divided into different distinct groups is called the nominal variable.
Ordinal variable: The categorical variable which can be divided into different distinct groups that are classified using an ordered factor is called the Ordinal variable.
Interval data: The quantitative data which doesn't contain the true value of zero are called interval data. The measurement can fall below zero. (eg: -40 degrees Fahrenheit)
Ratio data: The quantitative data which contain the true value of zero are called Ratio data. The measurement can never fall below zero. (eg: height or weight of a person)
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