Collaborative Statistics Sample Exercise

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    p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 10.0px Helvetica} Exercise 1.12.27 “‘Duration (amount of time)”’ is what type of data?

    • A. qualitative
    • B. quantitative - discrete
    • C. quantitative - continuous
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P. P1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica}
1.12.1 Try these multiple choice questions

Collaborative Statistics Sample Exercise - Quiz

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  • 2. 

    p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 10.0px Helvetica} The next four questions refer to the following: A Lake Tahoe Community College instructor is interested in the average number of days Lake Tahoe Community College math students are absent from class during a quarter. Exercise 1.12.19 What is the population she is interested in?

    • A. All Lake Tahoe Community College students

    • B. All Lake Tahoe Community College English students

    • C. All Lake Tahoe Community College students in her classes

    • D. All Lake Tahoe Community College math students

    Correct Answer
    A. D. All Lake Tahoe Community College math students
    Explanation
    Feedback/Explanation

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  • 3. 

    p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 10.0px Helvetica} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Helvetica} Exercise 1.12.20 Consider the following: X = number of days a Lake Tahoe Community College math student is absent In this case, X is an example of a:

    • A. Variable

    • B. Population

    • C. Statistic

    • D. Data

    Correct Answer
    A. A. Variable
    Explanation
    Feedback/Explanation

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  • 4. 

    p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 10.0px Helvetica} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Helvetica} Exercise 1.12.22 The instructor’s sample produces an average number of days absent of 3.5 days. This value is an example of a

    • A. Parameter

    • B. Data

    • C. Statistic

    • D. Variable

    Correct Answer
    A. C. Statistic
    Explanation
    The instructor's sample produces an average number of days absent of 3.5 days, which is a specific value calculated from the data collected in the sample. This value represents a characteristic of the sample itself and is therefore an example of a statistic.

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  • 5. 

    p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 10.0px Helvetica} The next three questions refer to the following: A study was done to determine the age, number of times per week and the duration (amount of time) of resident use of a local park in San Jose. The first house in the neighborhood around the park was selected randomly and then every 8th house in the neighborhood around the park was interviewed. Exercise 1.12.25 “‘Number of times per week”’ is what type of data?

    • A. qualitative

    • B. quantitative - discrete

    • C. quantitative - continuous

    Correct Answer
    A. B. quantitative - discrete
    Explanation
    The data "number of times per week" is considered quantitative because it represents a numerical value. It is specifically classified as discrete because it represents a countable number of times, rather than a continuous range of values.

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  • 6. 
    p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 10.0px Helvetica} span.s1 {font: 7.6px Helvetica} The next two questions refer to the following relative frequency table on hurricanes that have made direct hits on the U.S between 1851 and 2004. Hurricanes are given a strength category rating based on the minimum wind speed generated by the storm. (http://www.nhc.noaa.gov/gifs/table5.gif13) p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 10.0px Helvetica} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Helvetica} Exercise 1.12.23 What is the relative frequency of direct hits that were category 4 hurricanes? - ProProfs

    p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 10.0px Helvetica} span.s1 {font: 7.6px Helvetica} The next two questions refer to the following relative frequency table on hurricanes that have made direct hits on the U.S between 1851 and 2004. Hurricanes are given a strength category rating based on the minimum wind speed generated by the storm. (http://www.nhc.noaa.gov/gifs/table5.gif13) p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 10.0px Helvetica} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Helvetica} Exercise 1.12.23 What is the relative frequency of direct hits that were category 4 hurricanes?

    • A. 0.0768

    • B. 0.0659

    • C. 0.2601

    • D. Not enough information to calculate

    Correct Answer
    A. B. 0.0659
    Explanation
    The relative frequency of direct hits that were category 4 hurricanes is 0.0659. This means that out of all the direct hits on the U.S between 1851 and 2004, approximately 6.59% of them were category 4 hurricanes.

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  • 7. 

    p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 10.0px Helvetica} Exercise 1.12.26 The sampling method was:

    • A. simple random

    • B. systematic

    • C. stratified

    • D. cluster

    Correct Answer
    A. B. systematic
    Explanation
    The correct answer is B. systematic. Systematic sampling is a sampling method where every nth item in the population is selected to be included in the sample. In this case, the sampling method used is systematic, meaning that every nth item was selected for the sample.

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  • 8. 

    p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 10.0px Helvetica} Exercise 1.12.24 What is the relative frequency of direct hits that were AT MOST a category 3 storm?

    • A. 0.3480

    • B. 0.9231

    • C. 0.2601

    • D. 0.3370

    Correct Answer
    A. B. 0.9231
    Explanation
    The relative frequency of direct hits that were AT MOST a category 3 storm is 0.9231. This means that out of all the direct hits, 92.31% of them were category 3 storms or lower.

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  • 9. 

    p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 10.0px Helvetica} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Helvetica} Exercise 1.12.21 The instructor takes her sample by gathering data on 5 randomly selected students from each Lake Tahoe Community College math class. The type of sampling she used is

    • A. Cluster sampling

    • B. Stratified sampling

    • C. Simple random sampling

    • D. Convenience sampling

    Correct Answer
    A. B. Stratified sampling
    Explanation
    The instructor used stratified sampling because she divided the population (Lake Tahoe Community College math classes) into different groups (strata) based on some characteristic (students) and then randomly selected 5 students from each group. This ensures that each group is represented in the sample, allowing for more accurate results.

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  • Current Version
  • Jan 29, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • Jun 17, 2011
    Quiz Created by
    Cliu
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