Hello, I was looking for a little help with a spreadsheet I was trying to recreate using zscores. This sheet was used to judge defenses in basketball, but I am having a tough time figuring out what the original creator used to make the calculations. I understand how to get the means and S.D. for the columns listed, and the zscore for (raw z-FG%). But under z-FG% (last column) it looks like he may have used several sources of data to come up with the answers. So, I'm looking for the formula used to calculate z-FG% of 0.4 for row team A. I hope I am posting this in the right spot! Thanks
| team | Opp FG% | raw z-FG% | Opp FGA | FGA as % of mean | z-FG% |
| A | 45.2 | 0.5 | 82.6 | 98.10% | 0.4 |
| B | 44.5 | 0 | 84.1 | 99.90% | 0 |
| C | 45.5 | 0.6 | 88.5 | 105.10% | 0.7 |
| D | 44.2 | -0.2 | 83.9 | 99.60% | -0.2 |
| E | 42.9 | -1.1 | 85.9 | 102.00% | -1.1 |
| F | 45.1 | 0.4 | 83.2 | 98.80% | 0.4 |
| G | 45.9 | 0.9 | 83.4 | 99.00% | 0.9 |
| H | 45.9 | 0.9 | 83.6 | 99.30% | 0.9 |
| I | 44.8 | 0.2 | 83.3 | 98.90% | 0.2 |
| J | 43.1 | -0.9 | 84.6 | 100.50% | -0.9 |
| K | 43.3 | -0.8 | 90 | 106.90% | -0.9 |
| L | 41.1 | -2.2 | 83.6 | 99.30% | -2.2 |
| M | 42.8 | -1.1 | 83.1 | 98.70% | -1.1 |
| | 44.3 | -0.1 | 82.1 | 97.50% | -0.1 |
| | 44.4 | -0.1 | 80.3 | 95.40% | -0.1 |
| | 44.4 | -0.1 | 81.8 | 97.10% | -0.1 |
| | 43.8 | -0.5 | 81.4 | 96.70% | -0.5 |
| | 46.7 | 1.4 | 88.1 | 104.60% | 1.5 |
| | 44 | -0.3 | 85.4 | 101.40% | -0.3 |
| | 45.4 | 0.6 | 83.3 | 98.90% | 0.6 |
| | 44.1 | -0.3 | 88 | 104.50% | -0.3 |
| | 46.7 | 1.4 | 81.2 | 96.40% | 1.4 |
| | 43.6 | -0.6 | 84.2 | 100.00% | -0.6 |
| | 43.2 | -0.9 | 86.2 | 102.40% | -0.9 |
| | 46.3 | 1.2 | 87.6 | 104.00% | 1.2 |
| | 46.9 | 1.6 | 87.2 | 103.60% | 1.6 |
| | 45.8 | 0.8 | 84.1 | 99.90% | 0.8 |
| | 46.7 | 1.4 | 83.1 | 98.70% | 1.4 |
| | 40.8 | -2.4 | 79.3 | 94.20% | -2.3 |
| | 44 | -0.3 | 82.9 | 98.50% | -0.3 |
| | | | | | |
| | | | | | |
| Means: | | 44.5 | | 84.2 | | |
| Standard Deviations: | | 1.5 | | 2.5 | | |
