{"id":4205,"slug":"south-africa-chart-gain-origin-split-07sep2026-robustness","title":"Robustness of Origin split of South Africa’s Spotify chart gain in African-origin streams, 13 August to 7 September 2026 (gain_sum)","source":"Recomputed from south-africa-chart-gain-origin-split-07sep2026","source_url":"","source_type":"computed","method":"Sensitivity check on \"gain_sum\" in the dataset south-africa-chart-gain-origin-split-07sep2026, 2 rows carrying a value. Rows sorted by that column, then the totals recomputed with the largest rows dropped one scenario at a time, and again with named rows excluded. sum_change_pct and mean_change_pct are each scenario against the full set. A finding that moves sharply when a single row leaves is a finding about that row.","unit":"streams","license":"Afrobeats Wire's compilation and analysis are licensed CC BY 4.0. Rights in the underlying source data remain with the source named above.","confidence":"medium","retrieved":"2026-09-11 07:41:38","n":2,"first_party":0,"columns":[{"key":"scenario","label":"Scenario","type":"text"},{"key":"n","label":"Rows","type":"number"},{"key":"sum","label":"Total","type":"number"},{"key":"mean","label":"Mean","type":"number"},{"key":"top_share_pct","label":"Largest row share, %","type":"number"},{"key":"sum_change_pct","label":"Change in total, %","type":"number"},{"key":"mean_change_pct","label":"Change in mean, %","type":"number"}],"rows":[{"scenario":"All rows","n":2,"sum":694698,"mean":347349,"top_share_pct":96.66,"sum_change_pct":0,"mean_change_pct":0},{"scenario":"Excluding the top 1 (ZA)","n":1,"sum":23187,"mean":23187,"top_share_pct":100,"sum_change_pct":-96.66,"mean_change_pct":-93.32}]}