Question
A method named for Welch and this letter approximates solutions to the Behrens–Fisher problem. A dimension reduction method often used to visualize genomic data is named ”[this letter]-SNE (“snee”).” The coefficient of determination equals the complement of the ratio of the residual sum of squares to a quantity denoted ”[this letter] SS.” A (*) distribution named for this letter converges to a standard normal distribution as degrees of freedom tend towards infinity. When sample size is small or variance is unknown, a statistic denoted with this letter is used instead of the z-score in a namesake test. For 10 points, give this letter that names “Student’s” distribution, which is like the normal distribution, but with heavier tails. ■END■
ANSWER: t [accept Welch’s t-test or t-SNE or TSS or Student’s t-test or Student’s t-distribution or t-statistic]
<David Bass, Science - Math> ~26251~ <Editor: David Bass>
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Summary
2023 PACE NSC | 06/10/2023 | Y | 33 | 85% | 3% | 0% | 95.07 |
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Brenden Stremler | Maggie Walker C | Northmont A | 94 | 10 |
Stella Broome | Maggie Walker B | Elkhorn North | 94 | 10 |
Sam Konkel | Johns Creek A | Winston Churchill A | 94 | 0 |
Ayan Kohli | Hunter B | John Adams A | 95 | 10 |
Owen Gibbs | Heights | Carl Sandburg | 97 | 0 |
Atharva Upadhye | Waukee | Washington | 102 | 10 |
Sanjay Ranjith | Thomas Jefferson D | Barrington B | 114 | 10 |
Aiden Dombrosky | Hoover B | Belvidere | 114 | 10 |
Charles Heydt | Midtown | Choate Rosemary Hall | 114 | 10 |
Alex Crowell | Rockford Auburn A | Mira Loma | 114 | 10 |
Ruthie Tan | John Adams B | Saint Joseph | 114 | 10 |
Alex Xu | Canyon Crest | Barrington A | 115 | 10 |
Jingyi Wu | Stevenson A | New Brighton | 115 | 0 |
Hatice Caliskan | Carl Sandburg | Heights | 115 | 10 |
Geo Beach | New Brighton | Stevenson A | 115 | 0 |
Ash Frederickson | Mexico | Innovation Academy A | 115 | 0 |
Andy Yu | Winston Churchill A | Johns Creek A | 115 | 10 |
Pranav Aiyar | William Fremd | Kinkaid | 115 | 10 |
Brodie Henry | West Point | Norman | 115 | 0 |
Varun Venkatagiri | Innovation Academy B | Northmont B | 115 | 10 |
Ryan Dai | Carbondale | Parkway West | 115 | 0 |
Brian O'Connell | Woodland | Richard Montgomery | 115 | 10 |
Jacob Barta | Detroit Catholic Central A | Thomas Jefferson B | 115 | 0 |
Dillan Rinehart | Winnebago | Walter Payton | 115 | 10 |
Nate Mroz | Detroit Catholic Central C | Cincinnati Hills Christian | 115 | 0 |
Nathan Wu | Plymouth | Detroit Country Day | 115 | 10 |
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