Term

Definition
Conclusions about the population are inferred from the information obtained about the sample Generalizations from the sample to the population Extrapolate findings from sample to population 


Term

Definition
Uses sample data to calculate a single number (statistic) to estimate the parameter of interest (for example a mean) 


Term
Point estimate does not include 

Definition
information about the variability between samples (uncertainty) 


Term

Definition
Provides a range of reasonable values that are intended to include the parameter of interest Establishes degree of confidence 


Term

Definition
The range of values used in an interval estimation Influenced by the standard deviation and sample size 


Term
From the mean and standard deviation of a sample, we can predict the 

Definition
intervals within which 68, 95 and 99% of our cases would be expected to fall 


Term
Acceptance or rejection of a hypothesis is based upon a 

Definition
level of significance (alpha level) 


Term

Definition
Rejection of a null hypothesis when it in fact is true 


Term
What determines the probability of type 1 error? 

Definition


Term

Definition
If the null hypothesis is accepted when in fact it is false 


Term
Five tests of parametric data 

Definition
Pearson correlation Independent Sample ttest Dependent Sample ttest Oneway ANOVA Correlated F ratio 


Term
Five tests of nonparametric data 

Definition
Spearmanâ€™s r
ChiSquare test
MannWhitney U test KruskalWallis test Wilcoxon Signed test 


Term
Independent Sample ttest 

Definition
Used to compare the average (MEAN) in one group with the average in another group 


Term

Definition
Compare the average for measurements made twice within the same person BEFORE and AFTER Used to compare a treatment group AND a matched control group 


Term

Definition
Used to compare more than two means from independent groups 


Term

Definition
Used in causal comparative studies Data are in frequency counts Compares observed and expected (theoretical) frequencies Typically used in a 2 X 2 table Chi square = sum [(observedexpected)^2/expected] 


Term

Definition
Nonparametric equivalent of independent ttest 


Term
Wilcoxon SignedRank Test 

Definition
Nonparametric equivalent of the paired ttest 


Term

Definition
Nonparametric equivalent of Oneway ANOVA 


Term
Three types of regression 

Definition
Simple linear regression logistic regression Multiple regression 


Term

Definition
Used to assess how one continuous variable can be used to predict a second continuous outcome variable 


Term

Definition
Used to assess the predictive value of one or more variables on an outcome that is dichotomous 


Term

Definition
A multivariate technique that determines the correlation between a criterion variable (dependent variable) and a combination of two or more predictor variables (independent variables) An extension of simple linear regression to investigate the relationships among a number of different variables 

