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Science Quiz
/ AP Psych - Statistics and Methodology
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Can you name the AP Psych - Statistics and Methodology?
by
dannye617
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Clues and answers taken from Barron's and class notes.
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Type of variable; a change will produce a change in another type of variable
Expresses relationship between variables; prediction of results
Square of standard deviation; represented by v
Psychological effect of people thinking they are taking a drug
Percentage of scores that lie within 2 standard deviations (z-score = 2) of the mean in a normal distribution
Central score in a distribution
Type of study; researchers observe participants in their habitats without any interaction
Type of study; conducted in controlled setting with variables; can show causal relationship
Type of study; full, detailed picture of one participant or a small group of participants
Things that can vary among participants in a study
Type of asymmetry in a distribution; extreme scores are very high; mean>median
A relationship between two variables; DOES NOT show causation!
Percentage of scores that lie within 1 standard deviation (z-score = 1) of the mean in a normal distribution
Average distance of scores in a distribution from the mean; represented by lowercase sigma
Type of variable; can skew data, make data less reliable
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Answer
Type of asymmetry in a distribution; extreme scores are very low; median>mean
Type of curve; perfectly symmetrical; also called bell curve
Type of study; expresses a relationship between two variables (e.g. hours studying vs. score on test)
Represented by the letter r; shows strength of relationship between 2 variables; can be between -1 and 1
Value of correlation coefficient below which correlation is weak (positive)
Average of scores in a distribution
Measure of distance between a score from the mean; units are the standard deviation
Percentage of scores that lie within 3 standard deviations (z-score = 3) of the mean in a normal distribution
Fake treatment given to one group of participants; identical to real treatment; used in blind and double-blind studies
Score in a distribution that appears most frequently
Type of variable; change in another type of variable will produce a change
Group that gets none of the independent variable; a basis for comparison
Group that gets treatment defined by independent variable
Difference between highest and lowest scores in a distribution
Type of study; asking participants to fill out questionnaire
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