Variables & Research Designs
The variable being manipulated in an experiment
What is an independent variable?
How consistent a measure is
What is reliability?
What is the formula for a Z score?
Z = X-M/SD
The difference between the predicted score and actual score
What is a residual?
A level of measurement that includes zero and has equal distance between values
What is ratio level measurement?
A method used to select a subset of a population that gives everyone an equal chance of being chosen
What is random sampling?
How accurate a measure is
What is validity?
What excel function do you need to calculate correlation?
PEARSON
Confidence interval refers to the overall population? TRUE or FALSE
True
Explaining a study's purpose to participants after the study ends
What is debriefing?
A term that defines how you will measure a construct
What is an operational definition?
A statistical measure that assesses internal reliability
What is Cronbach's alpha?
What function on esci on Jamovi do you use to observe correlations?
Correlations: Single Group
95% of studies will capture the population mean (what statistic is this referring to?)
What is 95% confidence interval?
The extent to which research findings can be generalized to real-life
What is ecological validity?
Research which manipulates an independent variable and includes random assignment
What is experimental research?
The degree to which two different measures of the same construct correlate
What is convergent validity?
What analysis on Jamovi to find internal reliability?
Factor > Reliability Analysis
A statistic that tells you the strength of a relationship
What is r2 (coefficient of determination)?
A Pearson's r value of 0.5 would indicate what kind of correlational strength?
Strong positive correlation
What are the only kinds of results you can draw from a correlational analysis?
Correlational (NOT causal)
The ability of a measure to predict future outcomes
What is predictive validity?
What is the formula for standard deviation?
√ (∑ ((X-M)^2))/(N-1))
The extent to which a sample's results differs from that of the population's results
What is sampling error?
On Jamovi, if you get a warning to reverse code an item, you should ALWAYS do so. TRUE or FALSE
False