Nominal, ordinal, and ratio data represent different types of data categories in statistics.
Nominal data are data with no standard numerical values, representing categories without a natural order. Examples include mental illnesses, ethnic background, and political affiliation. They are often referred to as categorical data.
Ordinal data involve rank-ordered data with standard numerical values, conveying a meaningful sense of order. An example is the level of educational attainment or preference rankings.
Ratio data show data in comparison to other data, such as the sex ratio (number of males per 100 females). This type of data provides comparative information.
https://brainly.com/question/31641853