Statistics

Developer Tools 6 min A typing-test word is five keystrokes and real English words run longer Typing tests count a word as any five keystrokes, the space included. Measured over two nineteenth-century nov... MA Maya Lin 19 Oct Statistics 6 min How reading-time estimates turn words and Chinese characters into minutes A reading-time label divides a text's length by an assumed reading speed, and the speeds in use for English ru... NA Nadia Rahim 18 Oct Statistics 6 min Chinese reign era names were reused by rival courts, and most Ming and Qing emperors began theirs at New Year Chinese emperors named their years by era names, and a date was written as the era plus a year count. Catalogu... NA Nadia Rahim 16 Oct Statistics 5 min Riegel's race-time formula comes within about 2% of world records and predicts recreational marathons too fast Riegel's formula scales a known race time to another distance using an exponent, usually 1.06. Tested against... NA Nadia Rahim 15 Oct Health & Wellness 6 min Equations estimating a one-repetition maximum match on heavy sets and diverge as reps climb A one-rep max is the heaviest weight a person can lift once, and published equations estimate it from a lighte... AM Amelia Wong 15 Oct Health & Wellness 6 min The usual mid-parental height range missed 12% of Galton's grown children The usual target height averages the parents' heights, shifts the result 6.5 cm for sex and allows 8.5 cm eith... PR Priya Nair 15 Oct Statistics 6 min Descriptive and algebraic chess notation, and the rules FIDE and PGN files disagree on Old chess books write moves in descriptive notation, naming each square from the mover's side, while FIDE's La... NA Nadia Rahim 15 Oct Statistics 6 min Hundreds of subject combinations can add up to the same PSLE Score Singapore's PSLE Score adds four Achievement Levels into a total from 4 to 32, where lower is better, and MOE... NA Nadia Rahim 15 Oct Science 6 min An X chromosome comes from fewer ancestors than a family tree allows A man's X chromosome can come only from his mother's side, while a woman's comes from both parents, so the anc... NA Nadia Rahim 15 Oct Statistics 6 min Singapore's golf tees turn one handicap index into very different stroke counts A Course Handicap rescales a golfer's Handicap Index by the Slope Rating of the tee being played. Across the 8... NA Nadia Rahim 15 Oct Statistics 6 min Net run rate tables from the ICC add up only when overs are counted in balls Net run rate is a cricket side's runs per over minus the runs per over scored against it, across every match w... NA Nadia Rahim 14 Oct Statistics 6 min One study's medium Cohen's d is compatible with effects from below small to large Cohen's d, Hedges' g and Glass's Δ all divide a difference between two means by a standard deviation, and diff... NA Nadia Rahim 14 Oct Home & Living 6 min A cat's age in human years is read off a chart printed with no stated basis The usual cat-years chart gives 15 human years for a cat's first year, 24 by its second birthday and 4 for eac... AM Amelia Wong 12 Oct Statistics 6 min Readability formulas fitted to the same readers still disagree by about a grade and a half Flesch-Kincaid, SMOG and other readability formulas give one text different grade levels because each counts a... NA Nadia Rahim 12 Oct Health & Wellness 6 min Dropping the sex point from the AF stroke score moved no combination between bands In 2024 the European Society of Cardiology replaced the CHA2DS2-VASc stroke score for atrial fibrillation with... PR Priya Nair 12 Oct Home & Living 6 min The 3,500 commonest Chinese characters mostly have an exact Mandarin homophone By Unicode's Unihan 17.0 readings, 89% of the 3,500 first-level characters on mainland China's 2013 standard l... EV Eva Chin 8 Oct Science 6 min Rare blood-group variants allow most of the child blood types a chart forbids The textbook ABO rule forbids at least one child blood type for every pairing of parent types except A with B.... NA Nadia Rahim 8 Oct Personality 6 min Blood type explains almost none of the variation in large Japanese and US surveys The belief that ABO blood type shapes temperament and compatibility has been popular in Japan since a 1971 boo... AM Amelia Wong 7 Oct Health & Wellness 6 min A baby's growth percentile depends on the chart behind it A growth percentile ranks one measurement against a reference group of children, and the WHO 2006 standard, th... PR Priya Nair 7 Oct Statistics 6 min Generation charts disagree on a third of post-war birth years Pew, McCrindle, the US Census Bureau and Indonesia's statistics office give different generation labels, or no... NA Nadia Rahim 7 Oct Statistics 6 min Division codes from China's Ministry of Civil Affairs survive renames and change with a place's type China's Ministry of Civil Affairs gives province-, prefecture- and county-level units six-digit codes, and all... NA Nadia Rahim 3 Oct Finance 6 min Singapore's Category A and B COE premiums nearly converged in 2026 Singapore's Category A and B COE premiums finished a median S$2,750 apart over the bidding exercises from Janu... DA Daniel Koh 3 Oct Statistics 4 min Malaysia's open postcode list names 2,930 codes MCMC's open postcode list names 2,930 Malaysian postcodes. How the first two digits mark the state, the one co... NA Nadia Rahim 3 Oct Statistics 6 min Taiwan's 22 counties and cities, read from the household register Taiwan's 22 counties and cities (台灣22縣市) on the household register for August 2026: population, area and d... NA Nadia Rahim 1 Oct