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Equation 21 · Part 2 · Forty Million Clicks Through One Uneven Door

subscript

ρR,Y\rho_{R,Y}
subscript

What this part means

The lower label selects a particular version, component, or indexed member of the quantity. For example, x₀ and xₜ can be values at different positions.

Its job in the formula

A subscript distinguishes a version, component, step, or member of a quantity. It does not automatically mean multiplication.

The passage around this formula

This is a DERIVED quantity, not a measurement: it has not been run against real per-country population totals or the actual SharedResponsesSurvey.csv microdata, and no value of ρR,Y\rho_{R,Y} for any real country is claimed here. What can be computed honestly, using only the paper’s own reported extremes for n — 101 respondents at the low end, 448,125 at the high end [ 1 ] — is how small ρR,Y\rho_{R,Y} would need to be, at illustrative (not dataset-matched) population scales, to produce a cross-country divergence of δ\delta = 0.1 , a magnitude in the range visible between clusters in the paper’s own Fig. 3b radar plot. For a nation of order 10^{6} residents sampled at n=101 : f ≈\approx…

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Learn the underlying idea

A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.

Open the illustrated subscripts: which member of a family? guide →

Sources cited in the surrounding passage

These citations provide research context; check each source for the exact claim it supports.