Question

Joey's first 14 quiz grades in a marking period were as follows:
86 84 91 75 78 80 74
87 76 96 82 90 98 93
Suppose Joey has an unexcused absence for the 15th quiz, and he receives a score of 0.
What is the range of Joey's first 14 quiz grades? What is the range of Joey's quiz grades after his unexcused absence?

Answer 1

Answer:

1.  $Range = 24$

2.  $Range = 98$

Step-by-step explanation:

Given

The data of quizzes

Required

Solving (a): Range of the 14 quizzes

$Range = Highest - Least$

In this case;

$Highest = 98$

$Least = 74$

So;

$Range = 98 - 74$

$Range = 24$

Solving for (b): Range of 15 quizzes

In this case;

Least = 0

So; Range becomes

$Range = 98 - 0$

$Range = 98$