Exam 5: Measuring Variables and Sampling

Dr. Monroe is interested in surveying college students at her university who are first generation college students. She contacts the registrar's office and finds out that there are 3500 first generation college students total. She wants to include 350 of those students in her sample. She then divided the population by the sample size and gets k = 10. She then picks a random number between 1 and 10 which is 8. This determines that every 8^th person in the population will be included in the sample. What type of sampling method is this?

Suppose you wish to test a representative sample of people in your psychology class on attitudes toward on-line courses. There are 40 people in the class, 30 females and 10 males. What would be the most efficient strategy to ensure that your sample reflects the distribution of males and females in the classroom population?

Construct validity is most related to what other concept discussed in research methods?

Convergent validity refers to

Your textbook authors suggest that if your population has fewer than 100 people you should

Gerald is developing a measure of shyness and he determines that students scoring high on the measure also score high for introversion on a well-known introversion-extraversion scale. The outcome best illustrates

Jacqueline wanted to assess the reliability of ratings made of children's aggressive behavior so she had two students rate the degree of aggression displayed by each of 50 children while engaged in play. She then compared the ratings made by these two students and computed the degree of agreement between them. Jacqueline used what method of assessing reliability?

Discriminant validity refers to

Jim is conducting a survey to learn about student attitudes toward abortion. He passes out his survey to the first 100 students that enter the cafeteria. What sampling method is Jim using?

The extent to which groups that are known to diverge from one another actually differ on the construct being developed is known as

What differentiates interval from ratio scales of measurement?

Temperature on a Kelvin scale is an example of

________of participants is done to obtain a representative sample, and ____________of the participants is done to improve the experimental design of the study.

Which of the following would represent scores on a nominal scale?

The publisher of the SAT can assess this type of reliability when individuals take the SAT more than one time with different versions of the SAT being given each time. Which type of reliability can be assessed?

The measurement of a variable has validity when

Interobserver agreement is assessed with nominal or ordinal variables by calculating

_____refers to the consistency of results and __________is the extent to which you are measuring what you think you are measuring.

Owen wanted to assess the internal consistency of his measure of anxiety so he measured reliability estimates by comparing items within his test. He reported a reliability estimate of .80. What measure of reliability is Owen using?

In the context of an experiment, a variable is