Packet 4: Bonus 8
A class of nonparametric methods named for this quantity includes the Mann–Whitney test and the Wilcoxon test. For 10 points each:
[10m] Name this quantity that, in statistics, is typically denoted with a parenthetical subscript. Kendall’s tau or Spearman’s rho are calculated using this quantity for each point in a dataset.
ANSWER: rank [or ranking; or ordering; accept rank statistic or order statistic]
[10e] Kendall’s tau and Spearman’s rho are alternatives to Pearson’s measure of this statistical relationship between two random variables.
ANSWER: correlation [or word forms like correlatedness; accept Pearson’s correlation coefficient]
[10h] In survival analysis, the log-rank test statistic is computed similarly to this estimator of the survival function. This decreasing, piecewise constant curve equals a running product over time of “one minus d-sub-i over n-sub-i.”
ANSWER: Kaplan–Meier estimator [or Kaplan–Meier curve; accept product–limit estimator]
<Editors, Other Science> | M. Playoffs 4 (Editors 4)
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 24 | 11.25 | 88% | 13% | 13% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| British Columbia | Pittsburgh | 0 | 10 | 0 | 10 | E |
| Bruin | Penn State | 0 | 0 | 0 | 0 | |
| Cambridge | Texas | 10 | 10 | 0 | 20 | ME |
| Chicago B | Purdue | 10 | 10 | 0 | 20 | ME |
| Columbia A | Maryland A | 0 | 10 | 0 | 10 | E |
| Columbia B | Johns Hopkins | 0 | 10 | 10 | 20 | EH |
| Georgia Tech B | Georgia Tech A | 0 | 10 | 0 | 10 | E |
| Georgia Tech C | Vanderbilt | 0 | 10 | 0 | 10 | E |
| Illinois A | MIT | 0 | 10 | 10 | 20 | EH |
| Indiana | NYU A | 0 | 10 | 0 | 10 | E |
| Maryland B | Georgetown | 0 | 10 | 0 | 10 | E |
| NYU B | Rutgers | 0 | 10 | 0 | 10 | E |
| Northwestern B | Illinois B | 0 | 10 | 0 | 10 | E |
| Ohio State | Virginia | 0 | 0 | 0 | 0 | |
| Stanford B | Michigan | 0 | 10 | 0 | 10 | E |
| Swarthmore | North Carolina | 0 | 0 | 0 | 0 | |
| Toronto A | Chicago A | 0 | 10 | 0 | 10 | E |
| Toronto B | UCLA | 0 | 10 | 0 | 10 | E |
| UC Berkeley A | Harvard | 0 | 10 | 10 | 20 | EH |
| UC Berkeley B | Northwestern A | 10 | 10 | 0 | 20 | ME |
| UCF | Cornell | 0 | 10 | 0 | 10 | E |
| Virginia Tech | Stanford A | 0 | 10 | 0 | 10 | E |
| WashU | Minnesota | 0 | 10 | 0 | 10 | E |
| Waterloo | Brown | 0 | 10 | 0 | 10 | E |
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| Main Site | 2026-04-17 | ✓ | 24 | 11.25 | 88% | 13% | 13% |