Experimental Design
This type of experimental design is used when subjects are naturally paired, such as identical twins.
What is a matched-pairs design?
This summary statistic is a measure of center not affected by outliers.
What is the median?
This distribution models the number of trials until the first success.
What is a geometric distribution?
This is the standard structure for a significance test.
What are hypotheses, conditions, calculations, and conclusion?
This value represents the strength and direction of a linear relationship.
What is the correlation coefficient (r)?
This reduces the effect of confounding variables in an experiment.
What is random assignment?
This type of graph is ideal for comparing two categorical variables.
What is a mosaic plot?
This is the expected value of a binomial distribution.
What is np?
This is the meaning of a 95% confidence level.
What is: in repeated sampling, 95% of intervals will capture the true parameter?
This is the interpretation of a slope in context.
What is the predicted change in the response variable for a one-unit increase in the explanatory variable?
In a completely randomized design with 2 treatments and 60 subjects, this method ensures equal treatment allocation.
What is random number generation and group assignment?
These are the four key components used to describe a distribution.
What are shape, center, spread, and outliers?
This is the interpretation of a probability of 0.08 in a geometric setting.
What is an 8% chance of success on each trial?
This is the term for rejecting a true null hypothesis.
What is a Type I error?
This value explains the proportion of variation in the response variable explained by the model.
What is the coefficient of determination (r²)?
Inference results from a study can be generalized only if this sampling method is used.
What is random sampling?
This type of distribution is indicated when the mean is greater than the median.
What is a right-skewed distribution?
These conditions must be met to use the binomial model.
What are fixed trials, two outcomes, independent trials, and constant probability?
This is the appropriate test when comparing two means from paired samples.
What is a paired t-test?
This plot helps identify whether a linear model is appropriate.
What is a residual plot?
This principle requires that there are enough subjects in each group to distinguish a real difference from random variation.
What is replication?
A residual plot is used for this purpose in regression analysis.
What is to assess the appropriateness of a linear model?
This is the probability that at least one of five randomly selected individuals meets a criterion, given a success probability of 0.15.
What is 1 − (0.85)5 ?
This is the correct name for a test involving categorical data in a two-way table.
What is a chi-square test of independence?
When extrapolation occurs, the model is used to predict in this manner.
What is outside the range of observed data?