Sample Final ExaminationQRB/501 Version 2

1

QRB/501 Sample Final Examination

This Sample Examination represents the Final Examination that students complete in Week Six. As in the following Sample Examination, the Final Examination includes questions that assess the course objectives. Although the Sample Examination includes one question per objective, the Final Examination includes three questions per course objective.

Refer to the questions in the following Sample Examination to represent the type of questions that students will be asked in the Final Examination. Refer students to the weekly readings and content outlines for each week as study references for the Final Examination.

Week One: Working with Numbers and Formulas

Objective: Write mathematical expressions and equations for word problems.

1. Write the following phrase as an algebraic expression: The sum of 18 and twice a number.a. 20xb. 18 + 2xc. x = –9d. 18 + x

Objective: Apply the rules for order of operations, including exponents, in solving problems.

2. Simplify: 37 – 42 ÷ 2(3)a. 3.5 b. 61c. 34 1/3 d. 13

Objective: Identify dependent and independent variables and their relationships.

3. Identify the variable, constant, and coefficient of the expression: –10k + 15. a. variable: k, constant: 15, coefficient: –10b. variable: 15, constant: –10, coefficient: kc. variable: –10, constant: k, coefficient: 15d. variable: k, constant: –10, coefficient: 15

Week Two: Business Applications

Objective: Solve simultaneous equations algebraically.

4. Solve the system of equations:– x + 3y = 4–2x + 6y = 8

a. { (x,y) │ x + y = 9 }b. { (x,y) │ x – y = 2 }c. { (x,y) │ 2x + 6y = –8 }d. { (x,y) │ x – 3y = –4 }

Objective: Use time series data to forecast.

No questions available for this objective at this time.

Sample Final ExaminationQRB/501 Version 2

2

Objective: Convert data to indices.

5. What can be concluded about an index of 75?a. an error was made because an index cannot be less than 100b. there was no change because the starting index is 75c. there has been a decline of 25 percentage points from the base periodd. there was in increase of 25 percent

Week Three: Visual Representations of Quantities

Objective: Construct histograms an bivariate plots.

6.The monthly incomes for a group of 100 engineers is ranges between $2,200 and $3,700. What class width would you use if you wanted 5 classes?a. 20b. 150c. 300d. 200

Objective: Determine the value of a slope by using the slope–intercept formula.

7. What is the slope of the line: y = 2x + 3a. 2b. 3c. 1/2d. 1

Objective: Conduct a linear regression analysis.

8. Which statement best describes the slope of the regression line?a. It is always greater than 1.b. It is a positive number.c. It is the change in y for a unit change in x.d. A slope of –4 moves 4 units up for every 1 unit to the right.

Week Four: Time Value of Money

Objective: Calculate the time value of money.

9. How many years will it take for an investment to double, if the interest rate is 8% per year, compounded annually?a. 9b. 12c. 10d. 7

Week Five: Decision Making with Uncertainty

Objective: Construct a frequency distribution.

10. The difference between a histogram and a frequency polygon isa. The frequency polygon is reported as a percentb. Bars cannot be adjacent in a histogramc. Open–ended classes can be accommodated with a frequency polygond. The histogram employs bars whereas the midpoints are connected for a frequency

polygon

Sample Final ExaminationQRB/501 Version 2

3

Objective: Compare measures of central tendency and measures of dispersion.

11. What is the relationship between the variance and the standard deviation?a. Variance is the square root of the standard deviationb. Variance is the square of the standard deviationc. Variance is twice the standard deviationd. No constant relationship between the variance and the standard deviation exists

Objective: Construct a normal distribution.

12. What is the distribution with a mean of 0 and a standard deviation of 1 called?a. Frequency distributionb. Standard frequency distributionc. z–scored. Binomial probability distribution

Week Six: Quantitative Reasoning for Business

Objective: Apply quantitative reasoning to business problems.

No questions available for this objective at this time.

This exam contains third-party copyrighted materials. Portions are: Copyright © 2010 University of Phoenix. All rights reserved.Copyright © 2010 Pearson Education. All rights reserved.Copyright © 2010 Key College Publishing. All rights reserved.