mtklein | 90c471e | 2014-06-16 14:04:32 -0700 | [diff] [blame^] | 1 | #ifndef Stats_DEFINED |
| 2 | #define Stats_DEFINED |
| 3 | |
| 4 | struct Stats { |
| 5 | Stats(const double samples[], int n) { |
| 6 | min = samples[0]; |
| 7 | max = samples[0]; |
| 8 | for (int i = 0; i < n; i++) { |
| 9 | if (samples[i] < min) { min = samples[i]; } |
| 10 | if (samples[i] > max) { max = samples[i]; } |
| 11 | } |
| 12 | |
| 13 | double sum = 0.0; |
| 14 | for (int i = 0 ; i < n; i++) { |
| 15 | sum += samples[i]; |
| 16 | } |
| 17 | mean = sum / n; |
| 18 | |
| 19 | double err = 0.0; |
| 20 | for (int i = 0 ; i < n; i++) { |
| 21 | err += (samples[i] - mean) * (samples[i] - mean); |
| 22 | } |
| 23 | var = err / (n-1); |
| 24 | } |
| 25 | |
| 26 | double min; |
| 27 | double max; |
| 28 | double mean; // Estimate of population mean. |
| 29 | double var; // Estimate of population variance. |
| 30 | }; |
| 31 | |
| 32 | #endif//Stats_DEFINED |