BOX PLOTS - loss of detail, but very useful for visual comparisons
ARRANGE Data in Order (Find fences to break into 4 = pieces)
5 Scores Minimum
Q1
Median
Q3
Maximum
Number of public high school graduates, in thousands,
for 15 states 1980 & 1990
| State | 1980 | 1990 | ||
| Fl | 87.3 | Min | 88.8 | Min |
| PA | 146.5 | Q1 | 110.5 | Q1 |
| MI | 124.3 | Median | 93.8 | Median |
| OH | 144.2 | Q3 | 114.5 | Q3 |
| AL | 45.2 | Max | 40.5 | Max |
| WY | 6.1 | 5.8 | ||
| NJ | 94.6 | 69.8 | ||
| ME | 15.4 | 13.8 | ||
| LA | 46.3 | 36.1 | ||
| IL | 135.6 | 108.1 | ||
| WI | 69.3 | 52.0 | ||
| NY | 204.1 | 143.3 | ||
| AZ | 38.6 | 32.1 | ||
| TN | 49.8 | 46.1 | ||
| SD | 10.7 | 7.7 |
Histogram Vs Box Plot bottom pg. 105
Outliers
Discussion in Exercise 12
Review Pg.
110, Cumulative Review pg. 113