| A | B |
|---|
| outlier | a value in a data set that is much greater or much less than the other values |
| data | information, facts, or numbers that describe something |
| interquartile range | difference between the upper and lower quartiles in a box-and-whisker plot |
| lower quartile | the median of the lower half of a data set |
| lower extreme | the least value in a data set |
| mean | the sum of the values in a data set divided by the number of values |
| median | the middle value in a data set when the values are written in numerical order |
| upper extreme | the greatest value in a data set |
| upper quartile | the median of the upper half of a data set |
| range | the difference of the greatest and least values in the data set |
| box-and-whisker plot | a data display that divides a data set into four parts using the lower extreme, upper extreme, median, lower quartile, and upper quartile |
| frequency table | a table used to group data values into intervals |
| histogram | a graph that displays data from a frequency table |
| stem-and-leaf plot | display that shows numerical data arranged in order. Each number in a data set can be broken up into a stem and a leaf. |
| frequency | how often data occurs |
| measures of spread | numbers that show variability like range, IQR, and MAD |
| measures of center | numbers that show how data is bunched like mean and median |
| survey | a method of collecting data about a group of people involving a question. |
| bias | partial, unfair, showing favoritism |
| random sample | a sample chosen in such a way that everyone in the population has an equal chance of being chosen |
| sample | a portion of the population |
| population | the entire set of items which data can be collected |
| parameter | a characteristic of a population |
| statistic | a characteristic taken from a sample |
