| A | B |
|---|
| highest to lowest | common method for ordering scores |
| tally scores | what you do after the scores are ordered |
| frequency distribution | list of scores which have been ordered and tallied |
| Scores should be listed individually if... | the range of scores is 20 points or less |
| Class intervals can be created if... | the range of scores is more than 20 points. |
| All class intervals should have... | the same width. |
| For class intervals, no score shoul appear in more than... | one interval. |
| cumulative frequency distribution | shows the number and percentage of scores at or below a given score |
| graphs | convey numerical information in visual form |
| histograms and frequency polygons | used to represent frequency distributions |
| For a histogram or frequency polygon... | vertical axis=frequency; horizontal axis=scores or intervals |
| The intersection point of the two axes is... | the lower values of both axes. |
| The vertical axis should be... | shorter than the horizontal axis. |
| When drawing histograms or frequency polygons... | midpoints are used to mark class intervals. |
| The bars of the histogram should... | touch each other. |
| A cumulative distribution may be graphed using a(n)... | ogive or "s" curve. |
| The pie graph is used when... | subparts add up to 100%. |
| The bar graph is used to represent... | nominal data. |
| The bars in a bar graph do not... | touch each other. |
| The line graph is used... | to show changes in value over time. |
| To show several groups in comparison to each other, you use a... | line graph. |
| The stem-and-leaf diagram is a modification of the... | histogram. |
| To show the median of a set of scores along with the spread, use a... | box plot. |
| For the box plot, scores are divided into... | four quartiles. |
| To indicate the median in a box plot, one draws a... | line in the middle of the box, which represents the middle 50% of scores. |
