Last year in Mr. Spencer's math classes, students who attended class at least 90% of the time usually received an A in his class. Students who attended class 80% to 90% of the time usually received a B or C in the class. Students who attended class less than 80% of the time usually received a D or F in the class.
1. Categorize each variable as qualitative or quantitative. Justify your reasoning.
2. Categorize each quantitative data as discrete or continuous. Justify your reasoning.​