File:Fse-fire-statistics-v3.svg

Fse-fire-statistics-v3.svg (SVG file, nominally 900 × 600 pixels, file size: 8 KB)

Summary

Unknown data and reporting bias must be addressed explicitly. Based on Hall and Ahrens (2002), pp. 5-67–5-70.

Diagram for the article Fire statistics (Fire Safety Academy wiki, level 1 Basic).

Source basis: Hall and Ahrens (2002), pp. 5-67–5-70
Alt text: Known and unknown incident fields lead to different apparent category shares and uncertainty.

New drawing by Fire Safety Academy. © Fire Safety Academy.

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current	16:07, 2 November 2026	900 × 600 (8 KB)	Sanne (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity
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	08:21, 2 November 2026	900 × 600 (5 KB)	Sanne (talk \| contribs)	Upload fse-fire-statistics-v3.svg: diagram for Fire statistics (level-1 visual plan V3)

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Short title	Known and unknown incident fields lead to different apparent category shares and uncertainty.
Image title	An incident table for an earlier and a later period with the same number of fires; the earlier period has more records with an unknown cause. Dropping unknowns gives a misleading apparent trend in every known cause. Proportional allocation assumes unknowns share the known distribution, and opportunity samples can overrepresent severe fires. All three require an explicit treatment of uncertainty.
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Height	600