Stats2
Terms
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- Power
- the probability of retaining significant results 1-B=power
- THE ASSUMPTIONS OF POWER
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AS SAMPLE SIZE INCREASES POWER INCREASES
THE SMALLER ALPHA IS THE LOWER THE POWER
AS POWER INCREASES GAMMA INCREASES - WHAT IS GAMMA
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THE DEGREE TO WHICH THE NULL HYPOTHESIS IS FALSE
hOW LARGE OF AN EFFECT THE IV HAD ON THE POPULATION - WHAT IS ALPHA
- USUALLY SET AT .O5 IS THE PROBABILITY OF MAKING A TYPE 1 ERROR WHICH WOULD BE REJECTING THE NULL WHEN IT IS TRUE
- PROBLEMS ASSOC W/A LINEAR RELATIONSHIP
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CURVINLINEAR RELATIONSHIP
NON-MONOTONIC RELATIONSHIP
RESTRICTED RANGE
OUTLIERS - ASSUMPTIONS OF AN INDEPENDENT T TEST
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RANDOM ASSIGNMENT AND SELECTION
SAMPLE SIZE IS RELATIVELY THE SAME
CONTROL GROUP AND EXPERIMENTAL GROUP
HOMOGENEITY OF VARIANCE
SCORES - HOMOGENEITY OF VARIANCE
- THE LARGEST VARIANCE CANT BE MORE THAN DOUBLE THE SMALLEST VARIANCE, NEEDS TO BE PRESENT IN ORDER TO CONDUCT A T-TEST
- DEPENDENT GROUPS T-TEST
- SHOWS THE EFFECT OF THE IV WHEN THE STD DEV IS NOT KNOWN, USED WITH MATCHED GROUPS OR REPEATED MEASURES DESIGN
- EPILSON
- USED IN ANOVA IS THE SAME AS R SQUARED FOR CORRELATION IN THE FACT THAT IT STATES THE STRENGTH OF THE RELATIONSHIP BTWN THE IV AND DV
- DICHOTOMOUS VARIABLE
- VARIABLE WITH ONLY 2 CATEGORIES, ie YES OR NO or MALE OR FEMALE
- DEGREES OF FREEDOM
- THE # OF QUANITIES THAT CAN VARY WHEN ESTIMATING THE VALUE OF A PARAMETER FROM A STATISTIC
- BETWEEN GROUP VARIANCE
- IN THE ANALYSIS OF VARIANCE IT IS THE DIFFERENCES IN MEANS BETWEEN THE DIFFERENT GROUPS BEING STUDIED
- PREDICTOR VARIABLE
- LINEAR REGRESSION THE VARIABLE THAT FROM WHICH THE CRITERION SCORES ARE ESTIMATED- THE X AND INDEPENTDENT VARIABLE
- CRITERION VARIABLE
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THE DEPENDENT/Y VARIABLE
THE VARIABLE THAT IS MANIPULATED BY THE PREDICTOR VARIABLE