MAT235Y1 Midterm: 2013 test questions + worked solutions

class which contains the abstract keyword in its declaration is known as abstract class. But, if a class has at least one abstract method, then the class must be declared abstract. 

(Object Oriented Programming in c++)

Class A has 25% fewer students than Class B. Class A has 6 more students than Class C. If there are 104 students in the 3 classes, how many students are there in Class C?

Which class(es) appear to have the most consistent scores? Explain the reasoning.

For questions 6-9 refer to the box plots (Assume their positions are on the same number line). Write your responses in complete sentences using content specific vocabulary. 

Class A                 

Class B                       

Class C               

Class D     

4. Which class(es) appear to have the most consistent score? Explain your reasoning.

5. Is there any classes(es) that might have an outlier? Explain your reasoning.

6. Which class would have the lowest standard deviation?

7. Which class would you want to be in? Explain your reasoning.