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The F test statistic for testing whether the variances of two populations are the same is always positive.
Debris Slide
A rapid, downward movement of rock and soil debris on a slope.
Rotational Slide
A type of landslide characterized by the rotational movement of rock or soil along a concave-upward surface.
Debris Flow
A rapid flow of water mixed with soil, rocks, and other debris down a slope, often triggered by heavy rain or snowmelt.
Rock Avalanche
A rapid, large-volume descent of rock debris and soil on a mountain slope, often triggered by seismic activity, rainfall, or melting snow.
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