Andrew’s Reviews > Statistics: A Complete Introduction > Status Update
Andrew
is on page 125 of 288
Thatcher: “Everyone in the nation has benefited from the increased prosperity.” Says her comment shows a common error, that averages “provide information about the *spread* of values”. Avg inflation adjusted earnings rose 30% in the 80s, but inequalities resulted in debt and poverty. Cites figures showing inter-quartile spread went up 20%, but every decile income at more than doubled. What am I missing?
— Jun 02, 2021 10:23AM
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Andrew’s Previous Updates
Andrew
is on page 101 of 288
Why is a standard deviation determined by taking the square root of the sum of the squared deviations divided by the number in the batch? I get the math, but *why* does that result define the standard deviation?
— May 12, 2021 01:18PM
