Question 1

Which of the following best defines statistics as described in the study materials?

Accepted Answer

The science of collecting, organizing, summarizing, and analyzing information to draw conclusions or answer questions.

Question 2

Which of the following is an example of a variable as defined in statistics?

Accepted Answer

The color of cars in a parking lot.

Question 3

A researcher wants to know the average height of all students at a university. The group of all students is called:

Accepted Answer

The population

Question 4

Which of the following is a qualitative variable?

Accepted Answer

Eye color

Question 5

In a study, the average test score of a sample of 100 students is used to estimate the average test score of all students. The average test score of the sample is called:

Accepted Answer

A statistic

Question 6

Which of the following is an example of a discrete variable?

Accepted Answer

The number of cars in a parking lot

Question 7

Which level of measurement is represented by the final grades (A, B, C, D, F) in a chemistry class?

Accepted Answer

Ordinal

Question 8

A hospital reports that all car crash victims pay an average of $$9000 in hospital bills with a margin of error of 266 $$and a 95% level of confidence. This is an example of:

Accepted Answer

Statistical inference

Question 9

Which of the following variables is continuous?

Accepted Answer

The temperature of 22 selected refrigerators measured in degrees Fahrenheit

Question 10

Which of the following best describes the difference between mathematics and statistics?

Accepted Answer

Statistics emphasizes context and variation, while mathematics focuses on abstract numbers and relationships.

Question 11

Which of the following is an example of data at the nominal level of measurement?

Accepted Answer

Eye colors

Question 12

A study collects the heights (in inches) of 350 employees at a hospital. What type of variable is height?

Accepted Answer

Quantitative, continuous

Question 13

Which of the following is NOT a step in the process of statistics as described in the materials?

Accepted Answer

Guess the answer based on intuition

Question 14

The numbers on the jerseys of a travel soccer team are an example of which level of measurement?

Accepted Answer

Nominal

Question 15

Suppose you are analyzing the marriage status of faculty at a local community college. What type of variable is marriage status?

Accepted Answer

Qualitative

Question 16

Which of the following is an example of an ordinal variable?

Accepted Answer

The ratings of a movie ranging from 'poor' to 'excellent'

Question 17

Which of the following best describes a parameter?

Accepted Answer

A numerical summary of a population

Question 18

If a variable can take on any value within a given range, it is best described as:

Accepted Answer

Continuous

Question 19

Which of the following is an example of interval level data?

Accepted Answer

Body temperatures in degrees Fahrenheit

Question 20

A researcher collects the number of milligrams of tar in 20 cigarettes. What type of variable is this?

Accepted Answer

Quantitative, discrete

Chapter 1: Data Collection – Introduction to Statistics and Types of Data

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