Consider the Regression Equation = B₀ + B₁xd with B₁

question 13

Multiple Choice

Consider the regression equation = b₀ + b₁xd with b₁ > 0 and a dummy variable d.If d changes from 0 to 1,which of the following is true?

• A) The intercept increases by b₀ + b₁.
• B) The intercept increases by b₁.
• C) The slope increases by b₀ + b₁.
• D) The slope increases by b₁.

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A dark, glossy coating found on the surface of rocks in arid environments, formed by microbial activities and the deposition of minerals.

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A gently sloping rock surface found at the base of mountains in arid and semi-arid environments, formed by the erosion of overlying rock and sediment.

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A landscape surface covered with closely packed, interlocking angular or rounded rock fragments of pebble and cobble size.