| A | B |
|---|
| ascending order | arranged from smallest to largest |
| bar graph | -used to compare several measure- ments of different items -uses bars to show quanities so data can be easily compared -bars can be stacked, side-by-side - bars do not touch between categories |
| circle graph | -used to show a relationship of the parts to a whole -you need to know the total - based on percentages, where 360* of the circle represents 100% |
| data | -information that can be collected through interviews, polls, surveys, observations, questionaires, and tally sheets -data can be organized using lists charts, and tables -data can be displayed in graphs |
| extremes | -the maximum or upper extreme is the highest piece of data -the minimum or lower extreme is the lowest piece of data |
| frequency table | -used to organize data to show how often something occurs - can use single numbers, ranges, or categories |
| interval (of the scale) | -amount from1 tick mark to the next along the axis on a graph - can be determined by finding the difference between the least and greatest value - the greater the difference, the larger the interval will need to be |
| line graph | -used to display continuous data like how data may change over time |
| line plot | -shows each item as an x on a number line -use for data that is consecutive in value -use with small data sets |
| mean | -the mathematical average -find it by adding up the data and dividing by the number of addends (or pieces of data) |
| measures of central tendency | -the measures of central tendency are the mean, median, and mode -they help are used to help give one number that basically “sums up” or typifies your data |
| median | -when data is arranged in numerical order, the median is the number in the middle -if there are 2 middle numbers, the median is their average |
| mode | - the value that appears most often in a set of data -there can be more than 1 mode |
| outlier | a value far away from most of the rest in a set of data |
| range | -the difference between the least and greatest values in a data set |
| sample | -part of the population that is chosen to represent the whole population |
| scale | - range of values on the axis of a graph - the scale does NOT have to begin with 0 |
| stem and leaf plot | - a way a organizing data that allows you to easily see how frequently certain data occurs - The stem is the first digit or digits; The leaf is the final digit of a value; - Each stem can consist of any number of digits; but Each leaf can have only a single digit. |
