AP Psych Unit 1

A measure of the extent to which two factors vary together, and thus of how well either factor predicts the other is called a

• measure of central tendency

• coefficient

• inferential statistic

• correlation

Define a double blind procedure:

• A statistical procedure that identifies common factors among groups of items

• An experimental procedure in which both the research participants and the research staff are ignorant about whether the research participants have received the treatment or a placebo.

• Any effect on behavior caused by the placebo, which the recipient assumes is an active agent, given to the control group in an experiment.

• A statement of the procedures used to define research variables.

The arithmetic average of a distribution, obtaining by adding the scores and then dividing by the number of score is the

• median

• mean

• mode

• dependent variable

In an experiement, this is main factor that is being studied, the "if" part of the study.

• distribution

• confounding variable

• independent variable

• correlation

A computed measure of how much scores vary around the mean score dependent on the range and square root of total scores.

• inferential statistic

• standard deviation

• descriptive research

• average

The difference between the highest and lowest scores in a distribution.

• standard deviation

• variance

• range

• dependent variable

Three descriptive methods of psychological research.

• experiements, correlations, case studies

• dependent variable, case studies, inferential statistics

• naturalistic observation, experiements, case study

• case studies, naturalistic observation, surveys

A graphed cluster of dots, each of which represents the values of two variables. The slope of the points suggests the direction of the relationship between the two variables.

• scatterplot

• postive correlation

• survey results

• inferential statistics

The most frequently occurring score(s) in a distribution.

• the mean

• the mode

• the average

• the little white rabbit

The tendency to believe, after learning an outcome, that one would have foreseen it.

• sampling bias

• hindsight bias

• the random effect bias

• single blind procedure