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Levels of Measurement
Sampling
Case-Level Designs
Group-Level Designs
Inferential Statistics
100
the variable that is affected
What is the dependent variable
100
a nonprobability sampling method that involves the researcher locating one member of a sample, and asking that member to help the researcher locate other members of the sample, and so on
What is snowball sampling?
100
ABA
What is A- baseline, B-intervention phase, and A-second baseline/no intervention
100
randomly assigning participants to either the experimental or control group, in such a way that the two groups are equivalent
What is random assignment?
100
the inferential statistic that requires measurements of variables at only the nominal or ordinal level, and is used to determine if two variables are related
What is Chi-square?
200
variable that can be ranked (high to low, low to high)
What is an ordinal variable?
200
a probability sampling type that involves each individual being chosen randomly and entirely by chance, such that each individual has the same probability of being chosen at any stage during the sampling process
What is simple random sampling?
200
AB
What are A- baseline, and and B-intervention
200
the group that does not receive the independent variable/is "not treated" in a research experiment?
What is the control group?
200
a test used to compare two groups of scores from the same individual
What is a dependent t-test?
300
the variable that "does the affecting", or is manipulated in a research experiment
What is the independent variable
300
If only a third of the population is needed to be in the sample, every third person is picked.
What is systematic random sampling.
300
BB1
What are B-original intervention, and B1-variation on original intervention
300
In a Pretest-Post-test Control Group Design: R O1 X O2 R O1 O2
What are R O1 X O2 - Random selection, First measurement of the dependent variable, Independent variable (intervention), and Second measurement of the dependent variable. (Experimental group) R O1 O2- Random selection, First measurement of the dependent variable, No intervention, and Second measurement of the dependent variable.(Control group)
300
a test used with two groups of scores that have no relationship to each other, used to determine statistical significance between the means of the two groups
What is an independent t-test?
400
variables where distances between value labels are known and equal
What are interval/ratio variables ?
400
type of nonprobability sampling method, also known as "accidental sampling", that involves selecting the first people for the sample that make themeselves available to the researcher
What is availability sampling ?
400
ABAB
What are A-baseline, B-intervention, A-second baseline with removal of intervention, and B-reintroduction of intervention the phases involved in the design?
400
In a comparison group post-test design: XO1 O1
What are X-intervention and O1- post-test (experimental group) O1-post-test (comparison group)
400
"p is greater than or equal to .05"
What is statistical significance?
500
least precise type of variable when it comes to measurement, with only different and mutually exclusive categories
What is the nominal variable?
500
the type of probablity sampling that can be used when there is difficulty creating a sampling frame
What is cluster random sampling
500
BCBC
What are intervention x, intervention y, intervention x, and intervention y?
500
In a multi-group post-test design: X O1 O2 O3
What is X-intervention O1- first measurement of the dependent variable O2- second measurement of the dependent variable O3-third measurement of the dependent variable
500
the extension of an independent t-test that uses three or more groups
What is a one-way ANOVA ?