If the correlation between X and Y is -.53, the regression will be____________________. a flat horizontal line a line that goes from low to high as X increases a line that goes from high to low as X increases all of the above none of the above
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If the
correlation between X and Y is -.53, the regression will be____________________.a flat horizontal line
a line that goes from low to high as X increases
a line that goes from high to low as X increases
all of the above
none of the above
2) The variation of scores around the regression line is zero if r = 1.
True
False
3) Researchers at Florida State University's Department of Community Medicine in conjunction with the Department of Public Transportation examined the association between alcohol consumption and the time it took to respond to a signal. Their data revealed that subjects who drank more alcohol took longer to respond to signals than subjects who drank no alcohol. These data are evidence_____________________________________.
for a
positive correlation between alcohol consumption and reaction timefor a
negative correlation between alcohol consumption and reaction timea cause and effect relation between alcohol consumption and reaction time
no meaningful association between alcohol consumption and reaction time
these data cannot be interpreted
Given that
If the correlation between X and Y is -.53
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