| Name | Date | Product | Units | Dollars |
| Betsy | 4/1/04 | lip gloss | 45 | $ 137.20 |
| Hallagan | 3/10/04 | foundation | 50 | $ 152.01 |
| Ashley | 2/25/05 | lipstick | 9 | $ 28.72 |
| Hallagan | 5/22/06 | lip gloss | 55 | $ 167.08 |
| Zaret | 6/17/04 | lip gloss | 43 | $ 130.60 |
| Colleen | 11/27/05 | foundation | 58 | $ 175.99 |
| Cristina | 3/21/04 | foundation | 8 | $ 25.80 |
| Colleen | 12/17/06 | foundation | 72 | $ 217.84 |
What formula would i use to find the average number of units of foundation purchased by Colleen?
