Exam 1: Introduction to Statistics

Interval scales of measurement

A researcher records the number of alcoholic drinks consumed per week by students living on campus in rural and urban colleges.In this example,the number of alcoholic drinks consumed per week is the dependent variable.

A therapist observes that spouses are more likely to forgive their partners for lying to them if they find out the truth from their spouse and not a third party.In this example,the dependent variable is

Recording the number of dreams recalled is an example of ________ data;whereas recording the time (in minutes)spent in a dream stage of sleep is an example of ________ data.

________ are measured in whole units or categories that are not distributed along a continuum.

A consultant ranks the five most needed areas of improvement for a local business.What scale of measurement are the rankings?

A movie critic rates a movie on a scale from one (lowest)to four (highest)stars.What scale of measurement are the ratings?

Which of the following measures of attraction is an example of a ratio scale measurement?

A social psychologist wants to study the expression of love toward a significant other among American family members.To study this behavior,the psychologist selects a group of local college students and has them complete a love survey.In this example,the group of local college students is the sample.

Most scientists have limited access to the phenomena they study,especially behavioral phenomena.

Each of the following are interval scale measurements,except

Which of the following best describes an independent variable?

Which of the following best describes a dependent variable?

Researchers often measure sample statistics to estimate or learn more about parameters in populations from which the sample statistics were measured.

Researchers rarely have access to entire populations.How do researchers resolve this limitation?

Quantitative measures can be

Continuous data are strictly distributed in discrete units.

________ data describe numeric aspects of phenomena;whereas ________ data describe nonnumeric aspects of data.

A researcher measures the body temperature (in degrees Fahrenheit)of participants immediately before and immediately following sleep.Temperature is on what scale of measurement?

An animal researcher measures the number of times a rat presses a lever located at the right,center,and left of a cage for a food reward.What scale of measurement is the location of lever pressing?