| Answer | Crossword Clue |
|---|---|
| ERRATIC | Impossible to predict |
| VOLATILE | Hard to predict |
| FLUKY | Hard to predict |
| TOSSUP | Difficult-to-predict outcome |
| TOSSUP | Hard-to-predict outcome |
| HAIL | Weather forecast that's hard to predict? |
| XFACTOR | Its effect is hard to predict |
| TAROT | Deck used to predict the future |
| TIDES | Lord Kelvin conceived a machine to predict them |
| IQS | They may be used to predict educational achievement |
| UNIVAC | Computer used to predict the 1952 presidential election |
| UNIVAC | First computer to predict a U.S. election outcome |
| COLLISIONTHEORY | What scientists use to predict the rates of chemical reactions |
