22 terms

Five Number Summary

minimum, 1st quartile, median, 3rd quartile, maximum

Box Plot

A graph that displays the highest and lowest quarters of data as whiskers, the middle two quarters of the data as a box, and the median

Center of data

Statistics that describe the middle of the data.

Data Distribution

The overall shape of a graph which shows the way in which data are spread out or clustered together

Dot Plot

a graphical device that summarizes data by the number of dots above each data value on the horizontal axis

Frequency Histogram

The ordered pair of points in the vertical and horizontal axes is plotted by placing bars in the graph area

Interquartile Range

The difference between the upper and lower quartiles.

Interval

the difference between two numbers on the scale

Relative Frequency

Percentage or proportion of the whole number of data.

Lower Quartile

The median of the lower half of data (box & whisker).

Maximum Value

The Largest Value in a set of data

Mean

A measure of center in a set of numerical data, computed by adding the values in a list and then dividing by the number of values in the list.

Median

A measure of center in a set of numerical data. The median of a list of values is the value appearing at the center of a sorted version of the list - or the mean of the two central values if the list contains an even number of values.

Minimum Value

The Smallest value in a set of data

Scale

A system of ordered marks at fixed intervals used as a reference standard in measurement

Shape

The overall pattern of the data set when graphed.

Standard Deviation

A computed measure of how much scores vary around the mean score.

Outlier

An extreme value in a data set. Quantified by being less than Q1 - 1.5**IQR or more than Q3 + 1.5**IRQ.

Scatterplot

A graphed cluster of dots, each of which represents the values of two variables.

Linear

arranged in or extending along a straight or nearly straight line.

Two-Way Frequency Table

(contingency table) displays the frequencies of data in two different categories

Upper Quartile

The median of the upper half of a set of data.