(CO 6) The coefficient of determination is represented by what notation? β ρ Correct! r2 r See text page 499 (CO 6) Two variables have a positive linear correlation. Does the independent variable increase or decrease as the dependent variable increases? Correct Answer Independent variable increas...
co 6 two variables have a positive linear correlation does the independent variable increase or decrease as the dependent variable increases
co 6 a student wants to determine if a higher quality
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MATH 221
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MATH-221 Week 7 Homework: Statistics for Decision-Making
(Extra Version)
Question 1
pts
(CO 6) The coefficient of determination is represented by what notation?
β
ρ
Correct!
r 2
r
See text page 499
Question 2
pts
(CO 6) Two variables have a positive linear correlation. Does the independent variable
increase or decrease as the dependent variable increases?
Correct Answer
Independent variable increases
Independent variable decreases
Independent variable would remain the same
Cannot determine from information given
See text page 473
, MATH-221 Week 7 Homework: Statistics for Decision-Making
(Extra Version)
Question 3
pts
(CO 6) Find the regression equation for the following data set
x 245 187 198 189 176 266 210 255
y 50 54 55 78 44 41 51 60
Correct!
ŷ = -0.09x + 74.17
ŷ = 74.17x – 0.09
cannot be determined
ŷ = 0.09x – 74.17
See text pages 487-488
Question 4
pts
(CO 6) A student wants to determine if a higher quality diet will improve their grade point
average. Which variable would be the response variable?
The number of classes taken
Correct!
Their GPA
The student
The higher quality diet
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