nominal, ordinal, interval, and ratio data for Psychology Undergraduates

Define nominal data and provide an example. A nominal data set is also known as a categorical data set. There is no indication of value within a nominal data set.

Define ordinal data and provide an example. With ordinal data you cannot state with certainty whether the intervals between each value are equal. An example would be a rating scale based on 1-10.

Define interval data and provide an example.The difference between intervals in equal. Do you agree strongly, somewhat, neutral, not at all.

Define ratio data and provide an example. A ratio variable, has all the properties of an interval variable, and also has a clear definition of 0.0

What is the difference between reliability and validity? Reliability is consistency of the data and validity is the data's accuracy.