Flashcards
PSYB01 - Chapter 12
Cards in this deck (22)
- 1Frequency distributionIndicates the number of participants who receive each possible score on a variable
- 2Bar graphUsed for comparing group means or percentages.
- 3Frequency polygonsUse a line to represent frequencies - when the data represents interval or ratio scales.
- 4HistogramUses bars to display a frequency distribution for a quantitative variable.
- 5Descriptive statisticsAllows researchers to make precise statements about the data.
- 6Central tendencyTells us what the sample as a whole is like.
- 7MeanSymbolized as X (X bar)
- 8MedianScore that divides the group in half - mdn
- 9ModeThe most frequent score - good for nominal scales.
- 10VariabilityNumber that characterizes the amount of spread in a distribution of scores.
- 11Standard deviationIndicates the average deviation of scores from the mean.
- 12VarianceThe standard deviation is derived from this.
- 13Pearson product-moment correlation coefficientUsed when both variables have interval or ratio scale properties.
- 14Restriction of rangeOccurs when the individuals in your sample are very similar.
- 15Curvilinear relationshipThe Pearson correlation coefficient can only find linear relationships.
- 16Effect sizeRefers to the strength of association between variables.
- 17Squared correlationThe percent of shared variance between the two variables.
- 18Cohen's DDescribes the magnitude of the effect of the independent variable on the dependent variable.
- 19Regression equationCalculations used to predict a person's score on one variable when that person's score on another variable is already known.
- 20Multiple correlationUsed to combine many predictor variables to increase the accuracy of prediction of a given criterion or outcome variable.
- 21Partial correlationStatistically controlling 3rd variables in non experiments.
- 22Structural equation modellingSet of techniques to examine models that specify a set of relationships among variables using the non experimental method.
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- PSYB01 (Flashcards) Flashcards on PSYB01 - Chapter 12, created by andreaarose on 09/12/2013.
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