Variables
A variable that has a finite number of classification groups or categories, which are usually qualitative in nature.
What is categorical variable
A measure that describes or characterizes an attribute.
What is qualitative measure?
The number of observations with a value less than the maximum value of the variable interval.
What is cumulative frequency?
A chart that has the nominal variable on the horizontal axis and the frequency of the response on the vertical axis, with spaces between the bars on the horizontal axis.
What is bar chart?
A variable that has an infinite number of potential values, with the value being measured falling somewhere on a continuum containing in-between values.
What is continuous variable?
A measure that reflects a numeric amount.
What is quantitative measure?
The percentage of observations with a value less than the maximum value of the variable interval.
What is cumulative percentage?
A diagram of the central value and variability seen in a data set, with a box containing the median and middle two quartiles of a data set and lines extending out to form “whiskers,” which represent the first and fourth quartiles of a data set.
What is box and whisker plot?
The outcome variable or final result.
What is dependent variable?
Data whose categories are exhaustive, exclusive, and rank-ordered with equally spaced intervals and a point at which the variable does not exist.
What is ratio data?
A number calculated by adding together all the relative frequencies less than or equal to the selected upper limit point.
What is cumulative relative frequency?
A chart that usually has an ordinal variable on the horizontal axis and the frequency of the response on the vertical axis, with no spaces between the columns on the horizontal axis.
What is histogram?
A variable measured or controlled by the experimenter; the variable that is thought to affect the outcome.
What is independent variable?
Data that indicates a difference only, with categories that are exhaustive and exclusive but not rank-ordered.
What is nominal data?
The number of times a particular observation occurs divided by the total number of observations.
What is relative frequency?
A chart in which the horizontal axis shows the passage of time and the vertical axis marks the value of the variable at that particular time.
What is line graph?
A group selected from the population.
The whole group.
What is sample and population?
Data whose categories are exhaustive, exclusive, and rank-ordered, with equally spaced intervals.
What is interval data?
An extreme value of a variable, one that is outside the expected range.
What is outlier?
A chart in which each point represents the measurement of one subject in terms of two variables.
What is scatterplot?