Place Ad Here
This finds the central value of a quantitative data set using addition and division
What is the mean?
A chance model
What is a distribution of values from a random process?
We can tell how well a regression line predicts a response variable by subtracting an actual value from its predicted value, also called this
What is a residual?
Georges Seurat would have appreciated these types of graphs for a single quantitative variable, which correspond one point to one data value
What is a dotplot?
H0
What is hypothesis test?
This finds the middle value of a quantitative data set. Sometimes it's there, sometimes it's an average
What is the median?
A scatterplot
What are the direction and strength of an association between two quantitative variables?
This is a "boxy" term for the range of the middle 50% of quantitative data values
What is the interquartile range (IQR)?
The p-value measures the strength of evidence against the null hypothesis, but so does this, where the further it is from the center, the stronger the evidence
What is a standardized statistic?
margin of error
What is a confidence interval?
Normally given by technology, this displays an average distance away from the mean in a chance model
What is standard deviation?
The 5-number summary
What are the quartiles, minimum, and maximum of a quantitative data set?
When researchers conduct an experiment, experimental units are assigned one or more of these
What is a treatment?
s/sqrt(n) is a number that uses theory to approximate this number from a chance model
What is the standard deviation?
p-value
What is hypothesis test?
What is a chance (null) model/distribution?
What is the likelihood of an observed statistic's value (or more extreme)?
The numerical value of this tells us how long half the length of a confidence interval is
What is the margin of error?
A confidence interval does this when the sample size increases.
What is get narrower?
the 2 SD method
What is a confidence interval?
It may not be very accurate, but this attempts to predict values of the response variable in a study.
What is the regression/prediction equation?
What is a range of values containing a parameter?
When sampling from a population, you either obtain a random sample...or this
What is a convenience sample?
A positive association between ice cream sales at a beachfront and number of shark attacks at the beach can be more clearly understood by considering the number of people at the beach, which is an example of this.
What is a confounding variable?
the Greek alphabet
What is a hypothesis test?