Statistic Chapter 2 Sample Question

Good Essays
Chapter 2 Study Guide

MULTIPLE CHOICE QUESTIONS

1. The relative frequency of a class is computed by a. dividing the midpoint of the class by the sample size b. dividing the frequency of the class by the midpoint c. dividing the sample size by the frequency of the class d. dividing the frequency of the class by the sample size Answer: d

3. The sum of frequencies for all classes will always equal a. 1 b. the number of elements in a data set c. the number of classes d. a value between 0 and 1 Answer: b

5. A researcher is gathering data from four geographical areas designated: South = 1; North = 2; East = 3; West = 4. The designated geographical regions represent a. qualitative data b. quantitative data c. label data d. either quantitative or qualitative data Answer: a

7. A tabular summary of a set of data showing the fraction of the total number of items in several classes is a a. frequency distribution b. relative frequency distribution c. frequency d. cumulative frequency distribution Answer: b

9. If several frequency distributions are constructed from the same data set, the distribution with the widest class width will have the a. fewest classes b. most classes c. same number of classes as the other distributions since all are constructed from the same data Answer: a

11. The sum of the percent frequencies for all classes will always equal a. one b. the number of classes c. the number of items in the study d. 100 Answer: d

13. The total number of data items with a value less than the upper limit for the class is given by the a. frequency distribution b. relative frequency distribution c. cumulative frequency distribution d. cumulative relative frequency distribution Answer: c

Exhibit 2-1

The numbers of hours worked (per week) by 400 statistics students are shown below.

Number of hours

You May Also Find These Documents Helpful

  • Powerful Essays

    Sample Chapter 2

    • 2909 Words
    • 12 Pages

    CHAPTER 2 REVIEW OF RELATED LITERATURE Presented in this chapter is a synthesis of facts that supports the following topic: Correlation of Popularity among 3rd Year Students and Their Relationship with Other Students. Background of the topic or what is it about including the advantages, disadvantages, etc. FRIENDSHIP PARADOX The friendship paradox is the phenomenon first observed by the sociologist Scott L. Feld in 1991 that most people have fewer friends than their friends have, on average.…

    • 2909 Words
    • 12 Pages
    Powerful Essays
  • Satisfactory Essays

    Chapter 2 Chapter Questions 1. Explain the basic structure of the U.S. Constitution. 2. Discuss which political group had the most impact on the formation of the Constitution and why. 3. Explain Madison’s defense of the Constitution in Federalist No. 10. 1. The Constitution is when a country has both formal and informal limits and is the backbone of our American Government. It established our principles and rules set by our nation and is the work of an “American experiment” in…

    • 278 Words
    • 1 Page
    Satisfactory Essays
  • Better Essays

    chapter 2 sample

    • 1854 Words
    • 8 Pages

    Chapter II Review of Related Literature and Studies Review of Related Literature Parents Portal The Parents Portal gives the parent an opportunity to view their student’s schedules, performance, and statement of accounts. Parents also have access to review current contact information, which may be used to help the school maintain accurate contact data. Online Reporting is the innovative use of media and communication technologies such as emails, blogs, websites and text alerts in…

    • 1854 Words
    • 8 Pages
    Better Essays
  • Good Essays

    2 2 Chapter Questions

    • 842 Words
    • 3 Pages

    2-2: Chapter Questions Action Items Q/ 01 Why study operations management? Answer All businesses want to hire bright people who can make the best decisions for the business as a whole, not the best marketing, finance, or operations decisions. They want employees who can see the big picture of how these functional areas interact. You will severely limit your career if you take a narrow functional perspective. Every decision is cross-functional in nature2. You will be working with operations and…

    • 842 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    Statistics Questions

    • 967 Words
    • 4 Pages

    Chapter 10 31. A new weight-watching company, Weight Reducers International, advertises that those who join will lose, on the average, 10 pounds the first two weeks with a standard deviation of 2.8 pounds. A random sample of 50 people who joined the new weight reduction program revealed the mean loss to be 9 pounds. At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p-value. 32. Dole Pineapple, Inc., is concerned…

    • 967 Words
    • 4 Pages
    Powerful Essays
  • Powerful Essays

    Thesis Chapter 2 Sample

    • 3711 Words
    • 17 Pages

    resources efficiently and effectively and manage and control their time management.” [1] “Event Management typically involves identification of target audience, devising a concept, plan logistics as well as coordinate and execute modalities of an event.” [2] The Importance of an Event Management for a Successful Company Event Management is a system that plays a significant role for teachers, employees, office workers, business owners even for an ordinary citizen. For everyone, a day is considered a success…

    • 3711 Words
    • 17 Pages
    Powerful Essays
  • Good Essays

    Statistics: Questions

    • 508 Words
    • 4 Pages

    308 Name:___________________________ Chp 1-2 Test 100 points In order to receive full credit, please show all work for every problem. You are welcome to use your calculator, book and notes, but please take this test on your own. 1. In your own words, explain what parameters and statistics are and what the difference is between them. Give an example to clarify. (10 points) 2. According to Consumer Reports, a random sample of 35 new cars gave an average of 21.1 mpg.…

    • 508 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Statistics Questions

    • 728 Words
    • 4 Pages

    QUESTION 21 The finishing process on new furniture leaves slight blemishes. The table below displays a manager's probability assessment of the number of blemishes on one piece of new furniture. Number of Blemishes 0 1 2 3 4 5 Probability 0.34 0.25 0.19 0.11 0.07 0.04 1. On average, how many blemishes do we expect on one piece of new furniture? 2. What is the variance of blemishes on one piece of new furniture? (round to the nearest hundredth) QUESTION 22 The probability…

    • 728 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    Sample Statistic Assignment

    • 2952 Words
    • 12 Pages

    1 LANGLEY HIGH SCHOOL 2013 AP STATISTICS SUMMER ASSIGNMENT Welcome to AP Statistics! You have selected a course unlike any other math course. The purpose of this Summer Assignment is to: 1. Give you information on what to expect, and how this course is different from other math courses. 2. Refresh your knowledge on statistics topics that you should know prior to this course. 3. Give you a chance to demonstrate your ability to analyze data and write conclusions. The Assignment is divided…

    • 2952 Words
    • 12 Pages
    Powerful Essays
  • Good Essays

    Question for Statistic

    • 898 Words
    • 4 Pages

    Ahmadi, Inc. for a sample of 10 trading days is shown below. Day Stock Price 1 84 2 87 3 84 4 88 5 85 6 90 7 91 8 83 9 82 10 86 For the above sample, compute the following measures. a. b. c. The mean = ∑X/n = 860/10 = 86 The median = (85+86)/2 = 85.5 The variance = ∑ X - X 2/ n-1 = {(84-86)2 + (87-86)2 + (84-86)2 + (88-86)2 + (85-86)2 + (90-86)2 + (91-86)2 + (83The standard deviation = √8.89 = 2.98 The coefficient of variation = 2.98/86 * 100% = 3.47% 86)2 + (82-86)2 + (86-86)2 } / (10 -1) = 8…

    • 898 Words
    • 4 Pages
    Good Essays