Categorical variable - Answers A variable that has a finite number of classification groups or categories,
which are usually qualitative in nature.
Continuous variable - Answers A variable that has an infinite number of potential values, with the value
being measured falling somewhere on a continuum containing in-between values.
Dependent variable - Answers The outcome variable or final result.
Empirical method - Answers Gathering information through systematic observation and
experimentation.
Estimate - Answers A preliminary approximation.
Independent variable - Answers A variable measured or controlled by the experimenter; the variable
that is thought to affect the outcome.
Interval data - Answers Data whose categories are exhaustive, exclusive, and rank ordered, with equally
spaced intervals.
Nominal data - Answers Data that indicates a difference only, with categories that are exhaustive and
exclusive, but not rank ordered.
Ordinal data - Answers Data whose categories are exhaustive, exclusive, and rank ordered.
Parameter - Answers Descriptive result for the whole group.
Population - Answers The whole group.
Probability - Answers How likely it is that an outcome will occur.
Qualitative measure - Answers A measure that describes or characterizes an attribute.
Quantitative measure - Answers A measure that reflects a numeric amount.
Ratio data - Answers Data whose categories are exhaustive, exclusive, and rank ordered with equally
spaced intervals and a point at which the variable does not exist
Sample - Answers A group selected from the population.
Statistic - Answers An estimate derived from a sample.
Variable - Answers The changing characteristic being measured.
Bar chart - Answers 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.
, Cumulative frequency - Answers The number of observations with a value less than the maximum value
of the variable interval.
Cumulative percentage - Answers The percentage of observations with a value less than the maximum
value of the variable interval.
Cumulative relative frequency - Answers Calculated by adding together all the relative frequencies less
than or equal to the selected upper limit point.
Frequency distribution - Answers A summary of the numerical counts of the values or categories of a
measurement.
Grouped frequency - Answers A frequency distribution with distinct intervals or groups created to
simplify the information.
Histogram - Answers 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.
Line graph - Answers 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.
Outlier - Answers An extreme value of a variable, outside the expected range.
Percentage - Answers A portion of the whole.
Percentile rank - Answers The percentage of observations below a particular value.
Percentiles - Answers Divide the data set into 100 equal portions.
Quartiles - Answers Divide the data set into four equal portions, with the first quartile being the 25th
percentile, the second quartile being the 50th percentile, and the third quartile being the 75th
percentile.
Relative frequency - Answers The number of times a particular observation occurs divided by the total
number of observations.
Scatterplot - Answers A chart in which each point represents the measurement of one subject in terms
of two variables.
Bimodal - Answers Having two values or categories that have the highest occurrence and that are equal
frequencies.
Central tendency - Answers An indicator of the center of the data.
Frequency distribution - Answers Lists all the possible outcomes of an experiment and tallies the
number of times each outcome occurs.