Part (a):
To get the total score, we will multiply each score by its number of quizzes and then sum the products.
This is done as follows:
total score = 0(1) + 1(0) + 2(3) + 3(4) + 4(4) + 5(1)
total score = 0 + 0 + 6 + 12 + 16 + 5
total score = 39
Part (b):
To get the number of quizzes she took, we will just add up the number of quizzes as follows:
number of quizzes = 1 + 3 + 4 + 4 + 1
number of quizzes = 13 quizzes
Part (c):
To get the mean (average) score, we will divide the total score by the number of quizzes.
This is done as follows:
mean score = [tex] \frac{39}{13} = 3[/tex]
Hope this helps :)
