Question 1

Which of the following best describes a variable measured on a ratio scale?

Accepted Answer

Annual income in dollars

Question 2

A researcher collects the number of cars sold by a dealership each month for the past five years. What type of data is this?

Accepted Answer

Time series data

Question 3

Which sampling method is most appropriate if you want to ensure that your sample reflects the gender distribution of the population?

Accepted Answer

Stratified sampling

Question 4

A Likert scale is most accurately described as:

Accepted Answer

A special case of interval data with typically 5 or 7 points

Question 5

Suppose you want to estimate the average amount spent on textbooks by students at your university. Which of the following would be considered a parameter?

Accepted Answer

The mean amount spent by all students at the university

Question 6

Which of the following is an example of a non-random sampling method?

Accepted Answer

Judgment sampling

Question 7

A survey asks respondents to rate their agreement with the statement: 'I am satisfied with my job' on a scale from 1 (Strongly Disagree) to 5 (Strongly Agree). What is the level of measurement for this variable?

Accepted Answer

Ordinal

Question 8

You want to estimate the proportion of residents in a city who support a new public transportation initiative. Which survey method is most likely to introduce coverage error?

Accepted Answer

Mailing surveys only to residents with listed landline phone numbers

Question 9

Which of the following best describes the difference between interval and ratio levels of measurement?

Accepted Answer

Ratio data have a meaningful zero, allowing for meaningful ratios, while interval data do not

Question 10

A company wants to survey its employees about job satisfaction. It divides employees into departments and randomly selects 5 employees from each department. What sampling method is being used?

Accepted Answer

Stratified sampling

Question 11

If you select every 10th customer entering a store to participate in a survey, which sampling method are you using?

Accepted Answer

Systematic sampling

Question 12

Which of the following is an example of cross-sectional data?

Accepted Answer

The income levels of 100 households surveyed in March 2024

Question 13

A researcher wants to study the effect of caffeine on reaction time. She randomly assigns participants to two groups: one receives caffeine, the other does not. She then measures their reaction times. What is the independent variable?

Accepted Answer

Caffeine consumption (yes/no)

Question 14

Which of the following is a potential source of nonresponse bias in a survey?

Accepted Answer

Some people selected for the survey choose not to participate

Question 15

Suppose you want to estimate the average commute time for all employees at a large company. You randomly select 50 employees from the company directory. What is the population in this context?

Accepted Answer

All employees at the company

Question 16

Which of the following best illustrates measurement error in a survey?

Accepted Answer

Respondents misunderstand a question and provide inaccurate answers

Question 17

A focus group is best described as:

Accepted Answer

A panel of individuals chosen to be representative for open-ended discussion

Question 18

Which of the following is a key advantage of using a stratified sample over a simple random sample?

Accepted Answer

It ensures representation of specific subgroups within the population

Question 19

A survey asks, 'How many times per week do you exercise?' What type of data is collected?

Accepted Answer

Discrete numerical

Question 20

Which of the following best describes the main difference between a census and a sample?

Accepted Answer

A census collects data from the entire population, while a sample collects data from a subset

Chapter 2: Data Collection – Foundations for Economic Data Analysis

Guida di studio - Domande di pratica

Study guide - Flashcard