Graphs & Charts Vocabulary

Graph in which the lengths of bars are used to represent and compare data.

A sample that's not representative of the population from which it is selected.

Displays data as sections of a circle. The entire circle represents all the data & is labeled using fractions, decimals or % of the sum of the data.

Information, facts or numbers that describe something.

The number of times an item, number, or event occurs in a set of data.

A table used to group data values into intervals.

A graph that displays data from a frequency table; has one bar for each interval of the table that contains data values. The length of the bar indicates the frequency for the interval.

A set containing all points (or all real numbers) between two given endpoints.

A type of graph in which points representing data pairs are connected by line segments.

A number line diagram that uses X marks to show the frequencies of items or categories being tallied.

The sum of the values in a data set divided by the number of values.

The middle value in a data set when the values are written in numerical order. If the data set has an even number of values, the median is the mean of the 2 middle values.

The number that occurs most frequently in a set of numbers.

A visual display (graph) of data shown by using symbols. Also may be referred to as a picture graph.

In statistics, the entire group of people or objects about which you want information.

A sample selected in such a way that each member of the population has an equally likely chance to be part of the sample.

The difference between the largest and smallest values in a numerical data set.

A part of a population.