Two ways of ranking national teams agree moderately
n=153 shared national teams. Spearman rho=0.6419, Pearson r=0.6369 between trailing-10 form win-rate and net-xG strength -- a parallel-forms rank-stability read, NOT a temporal split-half (that series is absent from the store) and NOT a ...
How to read this figure
Each point is a national team plotted by its trailing-10 form win-rate against its net-xG strength score; a tighter, more monotonic scatter is a higher rank correlation.
Continue with the data
Open the interactive analysis: Cross-Source Form-Strength DirectionWhat it means
This is a parallel-forms check: a recent-form ranking and a full-history strength ranking land in broadly the same order (Pearson r 0.6369 alongside the rho 0.6419). Read it as convergent validity -- the two measures see the same underlying quality -- rather than as proof that form persists over time.
Caveats and confounds
Descriptive only; NOT a temporal split-half and NOT a predictor (soccer_intl's predictive gate is CLOSED upstream). Form win-rate is quantized to one decimal (tie_fraction_form 0.9346), which inflates ties and pulls the correlation toward zero.