Exploring One-Variable Data
The variable which takes values that are labels, which place each individual into a particular group.
What is a Categorical Variable?
The variable that measures the outcome of a study.
What is the Response Variable?
The subset of individuals in the population from which we collect data.
What is a Sample?
What is a Probability Model?
A number that describes some characteristic of a sample.
What is a Statistic?
The variable which takes number values that are counts or measurements.
What is a Quantitative Variable?
The variable that helps predict or explain changes in a response variable.
What is an Explanatory Variable?
The study which observes individuals and measures variables of interest, but does not attempt to influence the responses.
What is an Observational Study?
The definition of two events which have no outcomes in common and so can never occur together.
What is Mutually Exclusive?
A number that describes some characteristic of the population.
What is a Parameter?
What is a dotplot?
The measure of the strength and direction of a linear relationship between two quantitative variables.
What is the Correlation(r)?
Consistent pattern of inaccurate responses to a survey question.
What is a Response Bias?
The probability that one event happens given that another event is known to have happened.
What is Conditional Probability?
The rule that says that the sampling distribution of sample proportion will be approximately normal when np≥10 and n(1-p)≥10.
What is the Large Counts Condition?
The graph that shows each interval as a bar.
What is a histogram?
The use of a regression line for prediction outside the interval of x values used to obtain the line.
What is Extrapolation?
The subject to which a treatment is randomly assigned.
What is an Experimental Unit?
The setting defined by a set number of trials of the same chance process and the count of times that one of two outcomes occurs.
What is a Binomial Setting?
The rule that says that when n is large, the sampling distribution of the sample mean x̄ is approximately normal.
What is the Central Limit Theorem (CLT)?
The value that describes the variation of data values around the mean.
What is the Standard Deviation?
The tendency for extreme values of the explanatory variable to be paired with less extreme values of the response variable.
What is the Regression to the mean?
A treatment that has no active ingredient but is otherwise like other treatments.
The setting defined by the same chance process and the count of trials it takes for one of two outcomes to occur.
What is a Geometric Setting?
The statistic used to estimate a parameter when the mean of its sampling distribution is equal to the value of the parameter being estimated.
What is an Unbiased Estimator?