Tomas DvorakUnderstanding AlphaGraphic explainer of the relationship between portfolio mean returns, alpha and beta.Jun 25Jun 25
Tomas DvorakVisualizing the 4% RuleThe 4% rule is a popular retirement income strategy in which retirees withdraw 4% of their initial account balance annually, adjusting the…Aug 4, 2023Aug 4, 2023
Tomas DvorakWhy did some colleges rise and others fall in the rankings?Yesterday, U.S. News came out with their annual rankings of U.S. colleges and universities. While often criticized, the rankings have an…Sep 13, 2022Sep 13, 2022
Tomas DvorakHow to rise in college rankings?Implications for resource allocation within an institution.Sep 13, 2022Sep 13, 2022
Tomas DvorakComparing HSAs to IRAsIt is well known that Health Savings Accounts (HSA) have significant tax advantages: contributions, earnings and withdrawals are all tax…Jan 14, 2022Jan 14, 2022
Tomas DvorakWhat parents and students should know about college outcomesWhere you go to college matters a lot less than what you study.Aug 2, 2021Aug 2, 2021
Tomas DvorakHow many colleges should I apply to?Applying to college is a high stakes game. Playing the game without knowing the odds of different outcomes seems imprudent.Feb 2, 2021Feb 2, 2021
Tomas DvorakinTowards Data ScienceTableau’s relationships are pretty coolUnlike joining tables into flat files, relationships preserve the native granularity of data. Joins are performed only as needed.Jan 21, 20212Jan 21, 20212
Tomas DvorakinTowards Data ScienceHow should we aggregate classification predictions?What if you had to predict how many passengers will survive Titanic? Are methods optimized for classification still appropriate?Aug 24, 20201Aug 24, 20201
Tomas DvorakCutting Salaries is Better than Cutting Retirement Plan ContributionsBy cutting retirement contributions, colleges and universities are pursuing a highly sub-optimal strategy to cut costs.Jul 11, 2020Jul 11, 2020