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Free Practice Quiz Question List

1. Statistical Questions and Data Online Quiz Questions

Use this free practice quiz with 20 questions to review 1. Statistical Questions and Data, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

Which question is statistical because it anticipates meaningful variability across multiple cases?

  1. A

    Does Jordan own a bicycle?

  2. B

    How many hours do college students sleep on a typical weeknight?

  3. C

    What is the boiling point of water at standard atmospheric pressure?

  4. D

    What is Maya's height?

02
Choose one
1 point

A researcher compares wait times across 15 hospitals, recording several characteristics for each hospital. What is the observational unit?

  1. A

    Each patient treated by the hospitals

  2. B

    Each medical treatment assigned

  3. C

    Each hospital included in the comparison

  4. D

    The national health-care system

03
Choose one
1 point

Which variable is categorical and ordered rather than quantitative?

  1. A

    Number of clinic visits

  2. B

    Body mass in kilograms

  3. C

    Commute time in minutes

  4. D

    Satisfaction level: very dissatisfied through very satisfied

04
True or false
1 point

True or false: A student identification number is a quantitative variable because it is written using digits.

  1. A

    True

  2. B

    False

05
True or false
1 point

True or false: If researchers record people's exercise habits and stress scores without assigning exercise routines, the study is an experiment.

  1. A

    True

  2. B

    False

06
Written response
1 point

In a data table, what term names the person, object, event, or other entity described by one observation?

07
Written response
1 point

A researcher reuses a publicly available government dataset that was collected previously for another purpose. What type of data is this?

08
Fill in the blank
1 point

A anticipates meaningful in the observations used to answer it.

09
Fill in the blank
1 point

The number of pets in a household is usually a quantitative variable, whereas body height is a quantitative variable.

10
Choose all
1 point

Select all statements that correctly distinguish a census from a sample survey.

  1. A

    A census attempts to include every member of a defined population.

  2. B

    A sample survey must include every member of the population.

  3. C

    A sample survey collects information from a subset of the population.

  4. D

    A census assigns treatments to participants.

11
Choose all
1 point

Select all examples of primary data for a current investigation.

  1. A

    A national census released five years ago

  2. B

    Blood-pressure measurements taken by the research team for this study

  3. C

    Administrative records collected by a hospital for its own operations

  4. D

    A survey designed and administered by the investigator for the current study

12
Open ended
1 point

A city wants to compare commute times for residents who use public transportation and residents who drive. Describe the population, observational units, two relevant variables, a plausible data source, and one important limitation on the conclusion.

13
Choose one
1 point

A survey records hours studied using the response choices “none,” “a little,” “some,” and “a lot.” How should the recorded variable be classified?

  1. A

    Quantitative, because studying is an activity that can last for a measurable time

  2. B

    Categorical, because the recorded choices are ordered labels rather than numerical amounts

  3. C

    Continuous, because every response must be a decimal measurement

  4. D

    Discrete, because the categories are listed separately

14
Choose one
1 point

A researcher records the number of pets owned by each household. How should this variable be classified?

  1. A

    Categorical and continuous

  2. B

    Quantitative and discrete

  3. C

    Categorical and discrete

  4. D

    Quantitative and continuous

15
Choose one
1 point

A researcher surveys 200 students about transportation method, commute time, grade level, and school days missed. What are the observational units?

  1. A

    The transportation methods

  2. B

    The school days missed

  3. C

    The 200 students

  4. D

    The school itself

16
Choose one
1 point

A hospital analyzes patient records that were collected several years earlier for administrative purposes. What kind of data are these for the hospital's new analysis?

  1. A

    Secondary data

  2. B

    Primary data

  3. C

    Experimental data

  4. D

    Census data

17
Choose one
1 point

Why is the question “How tall are students in Maya's class?” statistical rather than deterministic?

  1. A

    It concerns a single named student.

  2. B

    It asks for a numerical measurement.

  3. C

    It can be answered without collecting any data.

  4. D

    It anticipates variation among multiple students.

18
True or false
1 point

True or false: In an observational study, researchers record variables without assigning treatments to the observational units.

  1. A

    True

  2. B

    False

19
Written response
1 point

What statistical term names a characteristic recorded for each observational unit that can take different values?

20
Written response
1 point

What term describes data collected by an investigator or research team specifically for the current investigation?