91Ó°ÊÓ

Angela is a supervisor at a department store. She developed this chart to check the dollar amount of sales made by various salespersons. $$ \begin{array}{|c|c|} \hline \text { Sales } & \text { \\# Salespersons } \\ \hline \$ 0-\$ 50 & 1 \\ \hline \$ 51-\$ 100 & 3 \\ \hline \$ 101-\$ 150 & 7 \\ \hline \$ 151-\$ 200 & 6 \\ \hline \$ 201-\$ 250 & 4 \\ \hline \end{array} $$ What is the modal class of this week's sales? A. $$0-\$ 50$$ B. $$\$ 51-\$ 100$$ C. $$\$ 101-\$ 150$$ D. $$\$ 151-\$ 200$$

Use the following for questions 24-25. Sylvia has credit hours and grades as shown on the chart. Her school gives 4 points for an \(A, 3\) points for a \(B, 2\) points for a \(C, 1\) point for a \(D\), and nothing for an \(F\). $$ \begin{array}{|c|c|c|c|c|c|} \hline \text { Grades } & \text { A } & \text { B } & \text { C } & \text { D } & \text { F } \\ \hline \text { Credit hours } & 16 & 27 & 18 & 8 & 1 \\ \hline \begin{array}{c} \text { Grade points } \\ \text { per credit } \\ \text { hour } \end{array} & 4 & 3 & 2 & 1 & 0 \\ \hline \end{array} $$ What is her grade point average, the weighted mean of her grades? A. 2.50 B. 2.70 C. 3.37 D. 3.50

Terri has grades of 75, 87, 96, 75, and 88 prior to the final exam in her math class. What the range of Terri's grades? A. 13 B. 21 C. 84 D. 87

Terri has grades of 75, 87, 96, 75, and 88 prior to the final exam in her math class. If all the grades are weighted equally, what would Terri need to make on the final exam to average an \(A\) in the class ( \(A\) ranges between 90 and 100 points)? A. 90 B. 95 C. 100 D. It is impossible for her to get an A with those grades.

Terri has grades of 75, 87, 96, 75, and 88 prior to the final exam in her math class. If the final carries a triple weight, what is the minimum grade Terri needs to get an \(A\) in the course if an A requires an average of 90 ? A. 90 B. 99 C. 100 D. It is impossible for her to get an A with those grades.

Use the following for questions 31–38. $$ \begin{aligned} &\text { Elena's math scores }\\\ &\begin{array}{|l|l|} \hline \text { Test 1 } & 78 \\ \hline \text { Test 2 } & 83 \\ \hline \text { Test 3 } & 81 \\ \hline \text { Midterm exam } & 85 \\ \hline \text { Test 4 } & 89 \\ \hline \text { Test 5 } & 94 \\ \hline \text { Final Exam } & 96 \\ \hline \end{array} \end{aligned} $$ What is the average of Elena's math grades? A. 85 B. 86 C. 87 D. 88

$$ \begin{aligned} &\text { Elena's math scores }\\\ &\begin{array}{|l|l|} \hline \text { Test 1 } & 78 \\ \hline \text { Test 2 } & 83 \\ \hline \text { Test 3 } & 81 \\ \hline \text { Midterm exam } & 85 \\ \hline \text { Test 4 } & 89 \\ \hline \text { Test 5 } & 94 \\ \hline \text { Final Exam } & 96 \\ \hline \end{array} \end{aligned} $$ If the final exam carries double weight, what would Elena's new average be? A. 87 B. 88 C. 89 D. 90

Mrs. Webster surveyed her class of 20 students. She asked each student to identify his or her favorite sport out of a list of five sports. Each student could only choose one sport and everyone participated. The results of the survey are shown in the chart. $$ \begin{array}{|l|l|} \hline \text { Football } & 8 \\ \hline \text { Basketball } & 5 \\ \hline \text { Baseball } & 4 \\ \hline \text { Soccer } & 2 \\ \hline \text { Hockey } & 1 \\ \hline \end{array} $$ What fraction of the class chose hockey? A. \(\frac{1}{20}\) B. \(\frac{1}{10}\) C. \(\frac{1}{5}\) D. \(\frac{1}{4}\)

In Mrs. Espinol’s class of 25 students, the average score on the final exam is 85, with a standard deviation of seven. What is the range one standard deviation from the mean? A. 7 B. 14 C. 28 D. 64

In Mrs. Espinol’s class of 25 students, the average score on the final exam is 85, with a standard deviation of seven. Approximately what percent of the class passed the final exam if a passing score is above a 70 ? A. \(70 \%\) B. \(84 \%\) C. \(96 \%\) D. \(98 \%\)