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Statistics
year 2 stats
9
Psychology
Undergraduate 2
11/12/2013

Additional Psychology Flashcards


 

 


 

Cards

Term
Independent Variable
Definition
Thing the experimenter varies, manipulates within the experiment. The cause. Always on the X axis
Term
Dependent Variable
Definition
Result that are dependent from the sample. What the experiment measure.
The effect. Always on the Y axis
Term
Central Tendency
Definition
Can be defined by the Mean, the Mode, or the Median.
Term
Population Mean
Definition
Common average.
X(-)= sum of all the scores divided by N (number of scores).
Term
Median
Definition
X(~)
Middle value. Sort scores in ascending order. If the number of scores is odd, take the middle value. If it is even, take the mean of the middle value and the middle value+1.
Term
Mode
Definition
Mo(X)
The most frequently-occurring value among the observations
Term
Measure of Dispersion (Variability)
Definition
A value that can describe the spread of scores around a central tendency.
Term
Measure of dispersion related to the mean
Definition
deviance, variance, standard deviation
Term
Measure of dispersion related to the median
Definition
range, interquartile range
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