A Regression Analysis Between Y, Sales (In $1000) and X $\ddot { p }$

question 171

True/False

A regression analysis between y, sales (in $1000) and x, advertising (in $) yielded the least squares line $\ddot { p }$ = 60 + 5x. We can interpret the slope by saying that we estimate for each extra $1 spent on advertising that sales will increase by $5 000, on average.

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Definitions:

Wavelength

The distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.

Crests

The peaks or highest points of a wave, often used in the context of waves in physics or oceanography.

Amplitude

In physics, it refers to the maximum extent of a vibration or oscillation, measured from the position of equilibrium.

Rods

Photoreceptors in the retina of the eye that are responsible for vision at low light levels, but cannot discern color.