Deck 1: Introduction

Question 1

Measurement of a variable that is considered valid:

A) may still be biased.
B) measures what it is believed to measure.
C) cannot be considered reliable.
D) all of the above

Answer 1

measures what it is believed to measure.

Question 2

How could a researcher operationalize the variable "motivation for learning" among students in a course on statistics?

A) the average percent of class attendance
B) the number of unsolicited student comments made in each class
C) answers to a question that asks students how motivated they are
D) all of the above

Answer 2

all of the above

Question 3

What type of variable can assume an unlimited number of different values?

A) continuous
B) discrete
C) dichotomous
D) binary

Answer 3

continuous

Question 4

Once research data has been collected, they can be used to:

A) summarize the characteristics of the research sample or population that provided them
B) estimate the characteristics of the population from which a research sample was drawn
C) determine if a pattern of relationships between variables within a sample is likely to be a real one that exists within a population
D) all of the above

Question 5

Two or more binary, ratio level variables that are created from a nominal level variable are called:

A) independent variables
B) dependent variables
C) dummy variables
D) continuous variables

Question 6

Which research hypothesis would be considered non-directional or two-tailed?

A) Among social work students, males are more likely to desire a career in management than females.
B) Among social work students, females are more likely to desire a career in management than males.
C) Among social work students, males are just as likely to desire a career in management as female students.
D) Among social work students, males and females have different levels of desire for a career in management.

Question 7

Analogy: A statistic is to a research sample as is what a is to a population.

A) summary
B) parameter
C) data set
D) measurement

Question 8

Which of the following would be a variable among social work students?

A) income
B) life experience
C) motivation for seeking a degree
D) all of the above

Question 9

In a data set, what would be an example of a frequency?

A) the number of people in the research sample
B) the number of different value categories listed for the variable "religious affiliation"
C) the number of questions in the data collection instrument
D) the number of people who stated that they were 28 years old

Question 10

In research terminology, "value" refers to:

A) a strongly held belief.
B) a characteristic that tends to differ among people or objects.
C) a specific measurement of some variable.
D) the number of people who had a specific measurement of some variable.

Question 11

Statistical analysis that examines the relationship among three or more variables simultaneously is referred to as:

A) complex
B) bi-variate
C) univariate
D) multivariate

Question 12

A research hypothesis that predicts that male students will be more likely to re-sell their textbooks than female students predicts a relationship of:

A) causation
B) correlation
C) association
D) all of the above

Question 13

In the research hypothesis, "Younger students will learn to use statistical software more quickly than older students," what is the outcome variable?

A) age of students
B) number of computers previously purchased
C) time required to learn to use statistical software
D) presence or absence of math phobia

Question 14

What research question about a recent election would produce ratio level data?

A) How satisfied were you with the results of the election? ("very satisfied," "somewhat satisfied," "very dissatisfied")
B) Did you watch any of the returns on TV or your computer?
C) How many winning candidates did you support?
D) Did you make any financial contribution to a candidate's campaign?

Question 15

Evidence based practice (EBP) requires that we:

A) never question the results of statistical analysis of research data.
B) rely only on research findings for our practice decision-making.
C) be knowledgeable about statistical analysis so that we can determine which findings of researchers are trustworthy.
D) all of the above