Understandable Statistics Concepts and Methods 12th Edition by Charles Henry Brase – Test Bank

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Understandable Statistics Concepts and Methods 12th Edition by Charles Henry Brase – Test Bank

Chapter 3 – Averages and Variation

1. How hot does it get in Death Valley? Assume that the following data are taken from a study conducted by the National Park System, of which Death Valley is a unit. The ground temperatures  were taken from May to November in the vicinity of Furnace Creek. Compute the median for these ground temperatures. Round your answer to the nearest tenth.

148 151 168 173 194 178 193

194 178 178 168 163 151 144

  a.  159.5

  b.  168.0

  c.  193.5

  d.  341.0

  e.  170.5

ANSWER:   e

POINTS:   1

DIFFICULTY:   Easy

QUESTION TYPE:   Multi-Mode (Multiple choice)

HAS VARIABLES:   True

LEARNING OBJECTIVES:   13.26 – Find the median

NOTES:   Application

DATE CREATED:   11/4/2013 1:55 AM

DATE MODIFIED:   10/13/2016 10:24 AM

2. The Grand Canyon and the Colorado River are beautiful, rugged, and sometimes dangerous. Assume there is a physician at the park clinic in Grand Canyon Village. Suppose the physician has recorded (for a 5-year period) the number of visitor injuries at different landing points for commercial boat trips down the Colorado River in both the Upper and Lower Grand Canyon.

Upper Canyon: Number of injuries per Landing Point BetweenNorth Canyon and Phantom Ranch

2 3 1 1 3 4 8 11 3 1 3

 

Lower Canyon: Number of injuries per Landing Point BetweenBright Angel and Lava Falls

10 1 1 0 8 9 2 11 3 0 1 10 2 1

The mean, median, and mode for Upper Canyon are 3.636, 3.0, and 3, respectively.

The mean, median, and mode for Lower Canyon are 4.286, 2.0, and 1, respectively.Compare the mean, median, and mode found in Upper Canyon and Lower Canyon, respectively.

  a.  Lower Canyon mean is smaller than Upper Canyon, Lower Canyon median is smaller than Upper Canyon, and Lower Canyon mode is smaller than Upper Canyon.

  b.  Lower Canyon mean is greater than Upper Canyon, Lower Canyon median is greater than Upper Canyon, and Lower Canyon mode is smaller than Upper Canyon.

  c.  Lower Canyon mean is greater than Upper Canyon, Lower Canyon median is smaller than Upper Canyon, and Lower Canyon mode is greater than Upper Canyon.

  d.  Lower Canyon mean is greater than Upper Canyon, Lower Canyon median is smaller than Upper Canyon, and Lower Canyon mode is smaller than Upper Canyon.

  e.  Lower Canyon mean is greater than Upper Canyon, Lower Canyon median is greater than Upper Canyon, and Lower Canyon mode is greater than Upper Canyon.

ANSWER:   d

POINTS:   1

DIFFICULTY:   Easy

QUESTION TYPE:   Multi-Mode (Multiple choice)

HAS VARIABLES:   True

LEARNING OBJECTIVES:   13.27 – Compare mean, median, and mode between two records

NOTES:   Application

DATE CREATED:   11/4/2013 1:55 AM

DATE MODIFIED:   3/18/2014 7:58 AM

3. The Grand Canyon and the Colorado River are beautiful, rugged, and sometimes dangerous. Assume there is a physician at the park clinic in Grand Canyon Village. Suppose the physician has recorded (for a 5-year period) the number of visitor injuries at different landing points for commercial boat trips down the Colorado River in both the Upper and Lower Grand Canyon. Compute a 5% trimmed mean for Upper Canyon and Lower Canyon. Round your answer to the nearest thousandth.

Upper Canyon: Number of injuries per Landing Point BetweenNorth Canyon and Phantom Ranch

2 3 1 1 3 4 9 12 3 1 3

 

Lower Canyon: Number of injuries per Landing Point BetweenBright Angel and Lava Falls

11 1 1 0 9 10 2 13 3 0 1 12 2 1

  a.  The 5% trimmed mean for Lower Canyon is 3.333 and for Upper Canyon is 5.583.

  b.  The 5% trimmed mean for Lower Canyon is 2.727 and for Upper Canyon is 4.786.

  c.  The 5% trimmed mean for Lower Canyon is 2.636 and for Upper Canyon is 3.857.

  d.  The 5% trimmed mean for Lower Canyon is 3.222 and for Upper Canyon is 4.417.

  e.  The 5% trimmed mean for Lower Canyon is 4.417 and for Upper Canyon is 3.222.

ANSWER:   e

POINTS:   1

DIFFICULTY:   Easy

QUESTION TYPE:   Multi-Mode (Multiple choice)

HAS VARIABLES:   True

LEARNING OBJECTIVES:   13.28 – Compute 5% timed mean for the sample

NOTES:   Application

DATE CREATED:   11/4/2013 1:55 AM

DATE MODIFIED:   3/6/2014 4:43 AM

4. In your biology class, your final grade is based on several things: a lab score, score on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 30% of your total grade, each major test is worth 22.5%, and the final exam is worth 25%. Compute the weighted average for the following scores: 92 on the lab, 85 on the first major test, 90 on the second major test, and 84 on the final exam. Round your answer to the nearest hundredth.

  a.  89.98

  b.  85.58

  c.  87.58

  d.  87.98

  e.  86.85

ANSWER:   d

POINTS:   1

DIFFICULTY:   Easy

QUESTION TYPE:   Multi-Mode (Multiple choice)

HAS VARIABLES:   True

LEARNING OBJECTIVES:   13.29 – Note the weighted average

NOTES:   Application

DATE CREATED:   11/4/2013 1:55 AM

DATE MODIFIED:   3/6/2014 4:45 AM

5. Find the range for the following sample data.

2317113027

  a.  10

  b.  7

  c.  6

  d.  3

  e.  19

ANSWER:   e

POINTS:   1

DIFFICULTY:   Easy

QUESTION TYPE:   Multi-Mode (Multiple choice)

HAS VARIABLES:   True

LEARNING OBJECTIVES:   13.30 – Find the range

NOTES:   Skill

DATE CREATED:   11/4/2013 1:55 AM

DATE MODIFIED:   3/6/2014 4:46 AM

Understanding Statistics: Concepts and Methods, 12th Edition by Charles Henry Brase – Test Bank

Overview:

The 12th Edition of “Understandable Statistics: Concepts and Methods” by Charles Henry Brase is a comprehensive textbook designed to help students grasp the fundamental concepts and methods of statistics. The accompanying Test Bank is a crucial resource for both students and educators, offering a wide range of practice questions and detailed answer explanations to enhance understanding and prepare for assessments.


Key Features of the Test Bank:

  1. Comprehensive Coverage:
    • Full Topic Range: Includes questions covering all major topics presented in the 12th Edition, such as descriptive statistics, probability, hypothesis testing, regression analysis, and inferential statistics.
    • Concept Integration: Ensures that questions reflect the integration of statistical concepts, methods, and applications as discussed in the textbook.
  2. Variety of Question Types:
    • Multiple-Choice Questions: Provides numerous multiple-choice questions to test knowledge on key concepts, statistical formulas, and problem-solving techniques.
    • True/False Questions: Features true/false questions to assess understanding of fundamental principles and statistical statements.
    • Short Answer Questions: Includes short answer questions that require concise explanations and calculations, promoting deeper comprehension of statistical methods.
    • Problem-Solving Questions: Offers questions that involve solving statistical problems and applying formulas to real-world scenarios, enhancing practical skills.
  3. Detailed Answer Rationales:
    • Explanatory Responses: Each question is accompanied by a detailed explanation of the correct answer, helping users understand the rationale behind solutions and reinforcing learning.
    • Step-by-Step Solutions: Provides step-by-step solutions for problem-solving questions, guiding users through the process of arriving at correct answers.
  4. Practical Application:
    • Real-World Scenarios: Includes questions based on real-world data and scenarios, allowing students to apply statistical methods to practical situations and improve analytical skills.
    • Data Interpretation: Features questions that test the ability to interpret statistical outputs, graphs, and charts, ensuring a comprehensive understanding of data analysis.
  5. Exam Preparation:
    • Practice Tests: Provides practice tests that simulate the format and difficulty level of actual exams, helping users assess their readiness and identify areas for improvement.
    • Study Strategies: Offers strategies for effective studying, including tips for approaching different types of questions and managing study time efficiently.
  6. Educational Utility:
    • For Students: Essential for studying and exam preparation, offering a range of practice questions that reinforce textbook content and support comprehensive review.
    • For Educators: Useful for creating quizzes, exams, and classroom activities. Helps evaluate students’ understanding and readiness for practical application of statistical concepts.
    • For Data Analysts: Supports continued education and review of core statistical concepts, aiding in professional development and application in data analysis.
  7. Updated Content:
    • Current Trends: Reflects the latest developments and updates in statistical methods and applications, ensuring that questions are relevant and in line with current educational standards.
    • Modern Examples: Incorporates recent examples and data sets to illustrate contemporary issues and advancements in statistical analysis.
  8. Comprehensive Review:
    • Identify Strengths and Weaknesses: Helps users identify areas of strength and areas needing further study, allowing for targeted review and improvement.
    • Track Progress: Provides tools for tracking progress and measuring improvement, supporting effective study planning and preparation.

Applications:

  • For Statistics Students:
    • Exam Preparation: Ideal for preparing for exams and assignments, providing practice questions and detailed explanations to reinforce learning and understanding.
    • Enhanced Learning: Supports a more interactive and engaging learning experience by integrating theoretical and practical aspects of statistics.
  • For Educators:
    • Teaching Resource: Acts as a supplemental resource for teaching statistics, providing practice questions and scenarios for classroom discussions and assessments.
    • Assessment Tool: Assists in evaluating students’ understanding and readiness for practical application, helping to create effective quizzes and exams.
  • For Professionals:
    • Ongoing Education: Useful for refreshing knowledge and staying updated with foundational concepts in statistics. Supports continued professional development and application in data analysis.
  • For Study Groups:
    • Collaborative Learning: Facilitates group study sessions, allowing members to discuss questions, explanations, and practical applications, enhancing collective understanding and application of statistical concepts.

Conclusion:

The Test Bank for “Understandable Statistics: Concepts and Methods, 12th Edition” by Charles Henry Brase is an invaluable resource for students, educators, and professionals seeking to deepen their understanding of statistical methods and applications. With a variety of practice questions, detailed answer rationales, and a focus on practical application, this test bank supports effective exam preparation, reinforces textbook content, and enhances comprehension of statistical concepts.

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