chapter 2- Statistics and Graphs Flashcards
Bar Graph
A graph using bars to compare quantities. The height or length of each bar represents a designated number.
Average
The sum of two or more quantities divided by the number of quantities; the mean
Frequency
The numbers of times an item occurs.
Graph
A visual way to display data
Horizontal Axis
The axis on which the categories or values are shown in a bar and line graph
Integers
The whole numbers and their opposites. …,-3,-2,-1,0,1,2,3…
Key
A sample data point used to explain the stems and leaves in a stem-and-leaf plot
Line Graph
A graph used to show how a set of data changes over a period of time
Line Plot
A diagram that shows the frequency of data on a number line
Mean
The sum of the numbers in a set of data divided by the number of pieces of data
Measures of Central Tendency
Numbers that are used to describe the center of a set of data. These measures include the mean, median, and mode
Median
The middle number in a set of data when the data are arranged in numerical order. If this data has an event number, the median is the mean of the two middle numbers
Mode
The number(s) or item(s) that appear most often in a set of data
Negative Numbers
A number that is less than zero
Opposites
Numbers that are the same distance from zero in opposite directions
