Samples & Populations
to draw this sample you must have access to everyone in the population, the selection process must be unbiased, and you need at least 25 individuals in your sample.
what is a simple random sample?
high scores on variable A and low scores on variable B
what is a negative (indirect/inverse) correlation)?
this refers to the consistency of the data generated by the operational definition
What is reliability?
a film critic ranks the top 50 greatest movies of all time
what is ordinal?
this research method reports data in anecdotes and verbatim quotes
what is qualitative?
this sample divides the population into groups, based on variables the researcher believes can influence the outcome of the study, before randomly selecting individuals from each group
What is a stratified random sample?
a correlation of r=.-45 is believed to be a weak, moderate or strong correlation?
what is a moderate correlation?
this reflects the accuracy of the data collected by the operational definition
What is validity?
an animal shelter keeps a list of the breeds of dogs that come in
what is nominal?
this method uses inductive reasoning
what is qualitative methods?
this sample is used when it is difficult to find participants for a study.
what is a snowball sample?
low scores on variable A and low scores on variable B
what is a positive correlation?
administering the same operational definition to the same group of individuals on two occasions.
What is test-retest reliability?
commuting times to school
what is ratio?
this method this likely to report statistical data
What is quantitative methods?
this sample is only representative of itself
What is a convenience sample?
an r=1.00 indicates this type of correlation
what is a perfect correlation?
this check of validity demonstrates support for the theory behind the research study
what is construct validity?
the two levels of measurement that have equal distance between two units
what are interval and ratio?
This type of research method engages the participants in intense and lengthy data collection.
what is qualitative mehtods?
this sample is selected based on known characteristics in the population
what is a quota sample?
r2 gives of this type of coefficient
what is the coefficient of determination?
this check of reliability is commonly reported as Cronbach's alpha
what is internal consistency (split half) check of reliability?
the level of measurement that has an absolute zero
what is ratio?
this research method has good external validity (generaliazbility) back to the population it comes from
what is quantitative methods?