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Statistical Models Review
Test Description: Unit 7
Instructions: Answer all questions to get your test result.
1) A line used to model the relationship between variables on a scatter plot when there is a linear association
A
hyperbola
B
parabola
C
drum line
D
trend line
2) A good trend line has __________ amount of points above and below it.
A
a different
B
about the same
C
no
D
a large
3) Strong positive correlation
A
r = 0.8
B
r = -0.9
C
r = 0.2
D
r = -0.3
4) Strong negative correlation
A
r = 0.2
B
r = -0.9
C
r = -0.3
D
r = 0.8
5) Weak negative correlation
A
r = -0.3
B
r = 0.2
C
r = 0.8
D
r = -0.9
6) Weak positive correlation
A
r = -0.3
B
r = 0.8
C
r = -0.9
D
r = 0.2
7) The null hypothesis for a chi-square test of independence is...
A
The two variables are not equal.
B
The two variables are not independent.
C
The two variables are equal.
D
The two variables are independent.
8) If gender and political party preference are not independent, it means __________ between gender and political party preference.
A
there is no association
B
there is an association
C
none
D
there is not enough information to determine an association
9) A test used to compare variances
A
A-Team
B
P-Test
C
F-Team
D
Z-Test
10) An F-Test can determine if the type of beverage employees consume affect their productivity, but it cannot determine...
A
none
B
how often they use the restroom.
C
what the effect is.
D
which beverage tastes the best.
*select an answer for all questions
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