()
| 436 | } |
| 437 | |
| 438 | @Override |
| 439 | public double kurtosis() |
| 440 | { |
| 441 | double mean = mean(); |
| 442 | |
| 443 | double tmp = 0; |
| 444 | double var = 0; |
| 445 | |
| 446 | for(int i = 0; i < used; i++) |
| 447 | { |
| 448 | tmp += pow(values[i]-mean, 4); |
| 449 | var += pow(values[i]-mean, 2); |
| 450 | } |
| 451 | |
| 452 | //All the zero's we arent storing |
| 453 | tmp += pow(-mean, 4)*(length-used); |
| 454 | var += pow(-mean, 2)*(length-used); |
| 455 | |
| 456 | tmp /= length; |
| 457 | var /= length; |
| 458 | |
| 459 | return tmp / pow(var, 2) - 3; |
| 460 | } |
| 461 | |
| 462 | @Override |
| 463 | public void copyTo(Vec destination) |