4. Look at the variable startyr. Select the down arrow beside the variable and look at the list of values that the variable has recorded. The wording of the 2020 and 2021 survey questions remained the same, but the question startyr - In what year did you start taking credit courses at Saint Mary's? changed with respect to the responses accepted. In 2020, students entered a number (the year), making this an interval variable. In 2021, students selected from a list of choices -2021(this term) - 2020 - 2019 - 2018 or before. making this an ordinalvariable. What do you see as the advantages/disadvantages of allowing students to enter a number compared to choosing from a list