ordinal data the last category that you tend to hear about with types of data is ordinal dataand it' sort of mixture of numerical and categorical data common example is star ratings for movie or musicor what have you in this casewe have categorical data in that could be through starswhere might represent poor and might represent excellentbut they do have mathematical meaning we do know that means it' better than so this is case where we have data where the different categories have numerical relationship to each other soi can say that star is less than starsi can say that stars is less than starsi can say that stars is greater than stars in terms of measure of quality now you could also think of the actual number of stars as discrete numerical data soit' definitely fine line between these categoriesand in lot of cases you can actually treat them interchangeably sothere you have itthe three different types there is numericalcategoricaland ordinal data let' see if it' sunk in don' worryi' not going to make you hand in your work or anything quick quizfor each of these examplesis the data numericalcategoricalor ordinal let' start with how much gas is in your gas tank what do you thinkwellthe right answer is numerical it' continuous numerical value because you can have an infinite range of possibilities of gas in your tank meanyeahthere' probably some upper bound of how much gas you can fit in itbut there is no end to the number of possible values of how much gas you have it could be three quarters of tankit could be seven sixteenths of the tankit could be /pi of tanki mean who knowsright