HYPOTHESIS TESTING Flashcards
characteristics of hypothesis
simple, specific, and stated in advance
a hypothesis must have a predictor and outcome variable
simple
must be stated in the proposal stage
stated in advance
a hypothesis must have an operational definition, sources of subjects, and approach to measuring variables
specific
a hypothesis must have no ambiguity about the subjects or variables
specific
there is no association between the predictor and outcome variables in the population
null hypothesis
it is accepted by exclusion if the test of statistical significance rejects the null hypothesis.
alternative hypothesis
states only that an association exists; it does not specify the direction.
two-tailed hypothesis
the direction of the association between the predictor and outcome variables.
one-tailed hypothesis
formal basis for statistical significance
null hypothesis
the entire significance level percentages goes into the extremes end of one tail of the distribution
one-tailed hypothesis
types of error in hypothesis
false-positive, and false-negative
you fail to reject the null hypothesis
false-negative/ type II error
you reject a null hypothesis that is actually true
false-positive/ type I error
Choosing the size of the association that would like
to able to detect in sample
effect size
