Question
1.What is a least squares regression line? What does regression tell us? 2.What is interpolation?What is extrapolation?Why is it dangerous to extrapolate outside the experimental
1.What is a least squares regression line? What does regression tell us?
2.What is interpolation?What is extrapolation?Why is it dangerous to extrapolate outside the experimental region (the range of your data)?
3.Given the following
Book
Pages (x variable)
Price (y variable)
A
511
$7.50
B
629
$8.15
C
551
$7.95
D
680
$9.50
E
529
$7.55
F
602
$8.00
G
489
$6.95
a.Make a scatter diagram which shows the trendline (this is the regression line) and provides the coefficient of determination on the graph itself.
b.What is the equation of the trendline from the graph? (Just copy it from your graph)
c.According to the equation of the trendline from your graph, if a book had 644 pages, how much should it cost?
d.According to the equation of the trendline from your graph, if a book costs $9.12, how many pages should it have?
4.You are presented with four values for Pearson's product moment correlation coefficient( r). Which one shows the strongest relationship? Why?
a.0
b.-0.19
c.0.59
d.-0.90
e.0.891.What is a least squares regression line? What does regression tell us?
2.What is interpolation?What is extrapolation?Why is it dangerous to extrapolate outside the experimental region (the range of your data)?
3.Given the following
Book
Pages (x variable)
Price (y variable)
A
511
$7.50
B
629
$8.15
C
551
$7.95
D
680
$9.50
E
529
$7.55
F
602
$8.00
G
489
$6.95
a.Make a scatter diagram which shows the trendline (this is the regression line) and provides the coefficient of determination on the graph itself.
b.What is the equation of the trendline from the graph? (Just copy it from your graph)
c.According to the equation of the trendline from your graph, if a book had 644 pages, how much should it cost?
d.According to the equation of the trendline from your graph, if a book costs $9.12, how many pages should it have?
4.You are presented with four values for Pearson's product moment correlation coefficient( r). Which one shows the strongest relationship? Why?
a.0
b.-0.19
c.0.59
d.-0.90
e.0.89
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Calculus
Authors: Laura Taalman, Peter Kohn
1st Edition
1464153035, 9781464153037
