Exam 1: Introduction to Statistics

A research asks people to indicate their zip code (35023, 35214, 35466, etc.). This variable may best be described as being measured at the ______ level of measurement.

A researcher asks people to indicate their area code (408, 510, 415, etc.) This variable may best be described as being measured at the ______ level of measurement.

The only strategy that can be used to minimize the influence of confounding variables is random assignment.

A researcher studying gambling behavior finds that people playing bingo will bet more money when they are allowed to choose their bingo cards than when they do not have this choice. In this study, the independent variable is best described as ______.

The dependent variable may be thought of as the ______; the independent variable is the ______.

A recent study of college women hypothesized that "females with higher levels of depressive symptoms will be more likely to engage in casual sex than females with fewer symptoms" (Grello et al, 2006). In this study, the independent variable is best described as ______.

For the variable in my study (Variable 'X'), I can say that someone with a score of 30 has 5 times more 'X' than someone with a score of 6. If so, Variable 'X' is measured at the ______ level of measurement

A researcher asks people how often they give blood: "Very often," "Often," "Sometimes," "Rarely," and "Almost never." This variable may best be described as being measured at the ______ level of measurement.

"We hypothesized that parents who use more frequent verbal punishment...will report more problem behaviors in their children" (Brenner & Fox, 1998, p. 252). In this study, the dependent variable is best described as ______.

A research hypothesis may be defined as a statement ______.

Generally, what is the first step in the research process?

"College students will rate instructors who dress formally . In this study, the dependent variable is best described as ______.

A person conducting research asks customers at a grocery store, "Which is your favorite snack cracker?" This variable may best be described as being measured at the ______ level of measurement.

Random assignment assigns participants to each category of an independent variable in such a way that each participant has a(n) ______ chance of being assigned to each category.

A researcher hypothesizes students who work full-time are less likely to graduate than students working part-time. In this study, the independent variableis ______.

Drawing a sample from a population, determining how the variables will be measured, and selecting a method by which to collect the data are all part of which step in the research process?

"I hypothesize there is no relationship between vaccinations and autism". What is the main problem with how this research hypothesis is stated?

The relationship between samples and populations may be described as ______.

Which of the following is NOT one of the main steps or phases in the scientific method of inquiry?

What type of research design would be used to compare parents who spank and those who do not on their children's aggressive behavior?