Elementary Statistics Vocabulary

The sum of the joint relative frequencies in a row or column of a two-way table.

• Marginal Relative Frequency

• Relative Frequency

• Conditional Relative Frequency

• Joint Relative Frequency

Shows the ratio of the number of data in each category to the total number of data items. The ratio can be expressed as a fraction, decimal or percent.

• Relative Frequency Table

• Conditional Relative Frequency

• Marginal Relative Frequency

• Joint Relative Frequency

A straight line that comes closest to the points on a scatter plot is called (a)   .

• Line of Best Fit

• Trend Line

• Frequency

• Correlation

A comparison between two data sets when one set of data values increases while the other decreases is called (a)   .

• Negative Correlation

• Positive Correlation

• No Correlation

• Trend

A comparison between two data sets when their data values increase together is (a)   .

• Positive Correlation

• Negative Correlation

• No Correlation

• Trend

A condition that occurs when data points in a scatter plot are grouped more in one part of the graph than the other.

• Clustering

• Cluster

• Gap

• Outlier

A comparison between two data sets that have no relationship between their data values is (a)   .

• No Correlation

• Negative Correlation

• Positive Correlation

• Trend

Involves the comparison of two variables: (a)   .

• Bivariate Data

• Outlier

• Cluster

• Frequency

What is a line of best fit?

• A point outside a pattern

• A graph in which the values of two variables is plotted along two axies

• The equation of a line that best fits a given set of data

• Not a straight line; can be curved

What is an outlier?

• A straight line

• The steepness of a line

• A point that lies outside of a pattern