TPI Distribution
Total Performance Index quartile breakdown for active Holstein bulls with official evaluations.
Bulls51,600
Range589 – 3,572
Mean1,812
Box-and-Whisker Plot
Box spans Q1–Q3 (interquartile range). Line = median. Whiskers extend to min/max.
TPI Frequency Distribution
Q1Q2Q3Q4
Quartile Breakdown
Q1Bottom 25%
589–1,421
TPI range
12,918bulls (25.0%)
Q2Lower-middle 25%
1,421–1,674
TPI range
12,897bulls (25.0%)
Q3Upper-middle 25%
1,674–2,141
TPI range
12,892bulls (25.0%)
Q4Top 25%
2,141–3,572
TPI range
12,893bulls (25.0%)
Summary Statistics
| Minimum | 589 |
| Q1 (25th percentile) | 1,421 |
| Median (50th percentile) | 1,674 |
| Mean | 1,812 |
| Q3 (75th percentile) | 2,141 |
| Maximum | 3,572 |
| IQR (Q3 − Q1) | 720 |
| Total bulls | 51,600 |