Checking Whether a Group Mean Difference Is Even Detectable
The capstone of the magnitude thread and a direct fence-support node. Working forward from the paper's own figures — an allele-count difference across populations times 2.1 Hz per copy — gives roughly 1.2 Hz of expected mean difference from the one known locus, against a lifetime age shift of about 26 Hz and a sex difference around 100 Hz. This must be taught explicitly as an order-of-magnitude argument assembled from the paper's numbers, not as a published estimate, and the node text must say so.
Questions this Concept answers
- Why compare an estimated genetic mean difference against the ageing and sex differences in pitch?
This Concept is waiting for its first lesson!
The capstone of the magnitude thread and a direct fence-support node. Working forward from the paper's own figures — an allele-count difference across populations times 2.1 Hz per copy — gives roughly 1.2 Hz of expected mean difference from the one known locus, against a lifetime age shift of about 26 Hz and a sex difference around 100 Hz. This must be taught explicitly as an order-of-magnitude argument assembled from the paper's numbers, not as a published estimate, and the node text must say so.
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