| A | B |
|---|
| range | The difference between the greatest number and the least number in a set of data |
| sample | A randomly-selected group chosen for the purpose of collecting data |
| scatter plot | A graph that shows the general relationship between two sets of data |
| variation | The spread in the values in a set of data |
| histogram | A special kind of bar graph that displays the frequency of data that has been organized into equal intervals |
| mean | The sum of the numbers in a set of data divided by the number of pieces of data |
| lower quartile | The median of the lower half of data in an interquartile range |
| frequency table | A table for organizing a set of data that shows the number of times each item or number appears |
| outlier | Data that is more than 1.5 times the interquartile range from the upper or lower quartiles |
| bar graph | A graphic form using bars to make comparisons of statistics |
| data analysis | To study data and draw conclusions from the numbers observed |
| circle graph | A type of statistical graph used to compare parts of a whole |
| measures of central tendency | Numbers or pieces of data that can represent the whole set of data |
| box and whisker plot | A diagram that summarizes data using the median, the upper and lower quartiles, and the extreme values |
| line plot | A graph that uses an "X" number above a number on a line each time that number occurs in a set of data |
| interquartile range | The range of the middle of data |
| mode | The number(s) or item(s) that appear most often in a set of data |
| median | The middle number in a set of data when the data are arranged in numerical order, and if the data has an even number it is in the mean of the two middle numbers |
| statistics | The branch of mathematics that deals with collecting, organizing and analyzing data |
| upper quartile | The median of the upper half of a set of numbers |
