1. Quiz 2a  Graphing and Charting

2. 1. What values are used to form the “box” in a box-plot? a) minimum and maximum b) quartiles 1 and 3 (Q 1 and Q 3 ) c) median +/–1 SD d) mean +/–1 SD

3. 2. Which graphing method is best for nominal data? a) bar graph b) histogram c) stem-plot d) line graph

4. 3. What is incorrect about the histogram below? a) right bar has different width b) middle bar has different width c) values on abscissa should be in reverse order

5. 4. What is the name of the graph at right? a) stem-plot b) box-plot c) pie chart d) pictograph 5 | 4 6 7 9 6 | 3 4 6 8 8 7 | 2 2 5 6 8 | 1 4 8 9 | 10| 6

6. 5. What is misleading about the graph at right? a) bias is introduced by the position of values around the circle b) January should be at the one-o’clock position c) area of a “petals” increase nonlinearly (½r 2 ) causing a bias

7. 6. What’s the name of the graph at right? a) bar graph b) histogram c) frequency polygon d) ogive