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Ch. 2 Stats/Graphs
Mrs. Bullecks Statistics and Graphs
| Question | Answer |
|---|---|
| average | the sum of two or more quantities divided by the number of quantities; the mean |
| bar graph | a graph using bars to compare quantities. The height or length of each bar represents a designated number |
| frequency | the number 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. |
| 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 numberical order. If the data has an even 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. |
| outliers | a value that is much higher or much lower than the other values in a set of data |
| positive numbers | a number that is greater than zero |
| range | the difference between the greatest number and the least number in a set of data. |
| stem-and-leaf plot | a system used to condense a set of data where the greatest place value of the data forms the stem and the next greatest place value forms the leaves. |
| vertical axis | the axis on which the scale and interval are shown in a bar or line graph. |
Created by:
Bullecks
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