The level of each variable measured is (1) the type of credit card is Nominal variable or a categorical variable which comes under multiple categories.(2) the amount (in dollars) of each purchase is ration variable it can have both discrete it starts at a fixed zero point.
Explanation:
There are four levels of measurement, while analyzing data of columns.
Nominal,Ordinal, Interval and ratio.
Nominal each row of that particular column has specific identification.
Nominal can have classification race,gender,ethnicity.
Ordinal data is based on the ranking system, order or list.
Numbers are still used arbitrary.
Interval distance between the numbers Celsius,Fahrenheit and kelvin.
Ratio data has an absolute zero point non-arbitrary, It is measuring .
