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4 results for “maths”.

• When Averages Lie: Mean, Median, and the Story They Hide
  "Average house price," "average salary," "average rainfall" — the same word can describe three very different numbers, and picking the wrong one changes every conclusion. A plain-language course on mean, median, distribution and the art of reading a statistic without being read by it.
• Percentages, Ratios and Discounts: The Mental Maths of Everyday Life
  Discounts, tax, tips, interest, statistics — it is all the same handful of percentage tricks. Master a few conversions and you will never again be fooled by a "20% then 10% off" sale or a "50% more" label.
• How Hacker News Ranks Its Front Page — The One-Line Formula That Keeps It Fresh
  A high-scoring story from yesterday is already sinking today. The Hacker News front page runs on one deceptively simple decay formula plus a human voting culture — here is the maths and the sociology, explained.
• How Earthquakes Are Measured: Magnitude Versus Intensity
  "A 7.0 earthquake" and "very strong shaking here" are two different measurements answering two different questions. Here is the logarithmic maths of magnitude, why the Richter scale was replaced, and what intensity really tells you.