A researcher asked 200 college students which Hogwarts hou…
A researcher asked 200 college students which Hogwarts house (Gryffindor, Slytherin, Ravenclaw, Hufflepuff) best matched their personality. The researcher wanted to know whether preferences were evenly distributed across houses and conducted a chi-square goodness-of-fit test. Which of the following is the correct degrees of freedom (df) for this chi-square test?