Which of the following, if true, would illustrate why price indexes such as the CSPI might overstate inflation in the cost of going to college? Check all that apply.
Professors required each student to buy 10 notebooks, regardless of the price. The quality of textbooks increased dramatically from 2014 to 2016, with textbook companies bundling new online study aids with their books, but this quality change is hard to measure. A new type of personal transporter, which made it easier to get around places like university campuses, became available for purchase. As the price of energy drinks increased relative to the price of coffee between 2014 and 2016, students decreased their consumption of energy drinks and increased their consumption of coffee.