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a
What is the coefficient or correlation and interpret and define it
as well
r = -0.877
b
What is the coefficient of determination and describe it as well.
r2 = 0.769
c
Identify the relationship of speed and mpg in layman’s term
referring to the result of your computation. It suggests that there is a
negative correlation exiting on speed and mpg
d
What statistic should we use in order to get the variance?
76.9% of can be explained by the regression model.
12
Immediately after the 9-11 incident, America Online conducted a
survey about: the reestablishment of World Trade Center. The responses
are the following:
Yes - 768,731
No -286,756
Too soon to decide
The respondents who participate is of large number, is it the
representation of the entire US population?
13
What level of measurement should be used on the following:
(nominal, ordinal, interval, ratio)
a)
The weight of the airplane passengers
b)
How the doctor describe the following: “abstains from alcohol,
light drinker, moderate drinker, heavy drinker” ¬¬¬¬¬¬¬¬¬¬¬¬¬¬
c)
The questions about the emotions of people during the day
ranging from 1-10 scale