In a Factorial Study, a Main Effect

question 48

Multiple Choice

In a factorial study, a main effect

• A)refers to any F ratio in the ANOVA that is significant
• B)occurs when differences are found for the different levels of an independent variable
• C)occurs when the effect of one independent variable depends on the level of another
• D)is determined by calculating row means (as opposed to column means)

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Definitions:

Permafrost

A layer of soil or rock below the Earth's surface that remains frozen throughout the year.

Species Richness

The number of different species represented in a given ecological community, landscape, or region.

Evergreen Shrubs

Shrubs that retain their leaves throughout the year and do not shed them seasonally.

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A type of small, shrubby oak tree adapted to grow in dry, sandy, or rocky soils, often found in scrublands or pine barrens.