Categorical and Quantitative Data
What is an explanatory response?
The variable manipulated by the researcher
Name one type of sampling methods
Simple random sample (SRS), stratified random sample, or cluster random sample
What is alpha assumed to be if not stated?
0.05 (95% confidence)
Name the three chi-square tests
Goodness of fit, homogeneity, and independence
What is a response variable?
The result of the explanatory variable being manipulated
Name two types of source bias
Undercoverage, non response, or response bias
What are the two other common alpha levels?
0.10 and 0.01
Which test(s) would be appropriate for 1 sample/treatment?
Goodness of fit or independence
In a left skew distribution, what side is the tail on?
The left side
What is the difference between experiments and observational studies?
Experiments require treatments
What is the general formula?
pt est +/- moe
Which test(s) would be appropriate for 2 or more samples/treatments?
Homogeneity
In a right skew distribution, what side is the tail on?
The right side
What are confounding variables?
A type of extraneous factor that produces spurious associations between variables
What is the 10% condition?
n < 1/10 (N)
Which test(s) would be appropriate for 1 variable?
Goodness of fit or homogeneity
What does the IQR rule identify?
Outliers
What is the difference between single blind and double blind?
Single blind: participants are unaware of which group they are in
Double blind: neither participant or researcher are aware of which group they are in
What is the large counts condition?
np >/= 10
n(1 - p) >/= 10
Which test(s) would be appropriate for 2 variables?
Independence