Examlex
In a test for a uniform distribution with k categories, the expected frequency is n/k in each cell.
Iron Ore
Naturally occurring rocks and minerals from which metallic iron can be economically extracted.
Gypsum
A common calcium sulfate mineral, generally formed by the evaporation of water.
Clay
A fine-grained natural soil material containing clay minerals, known for its plasticity when wet and used in ceramics.
Wallboard
A construction material made from gypsum and used in building for walls and ceilings, known for its fire resistance.
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