Statistical Models Review Question Preview (ID: 55404)


Unit 7. TEACHERS: click here for quick copy question ID numbers.

A line used to model the relationship between variables on a scatter plot when there is a linear association
a) trend line
b) parabola
c) hyperbola
d) drum line

A good trend line has __________ amount of points above and below it.
a) a different
b) about the same
c) a large
d) no

Strong positive correlation
a) r = -0.9
b) r = -0.3
c) r = 0.2
d) r = 0.8

Strong negative correlation
a) r = -0.9
b) r = -0.3
c) r = 0.2
d) r = 0.8

Weak negative correlation
a) r = -0.9
b) r = -0.3
c) r = 0.2
d) r = 0.8

Weak positive correlation
a) r = -0.9
b) r = -0.3
c) r = 0.2
d) r = 0.8

The null hypothesis for a chi-square test of independence is...
a) The two variables are independent.
b) The two variables are not independent.
c) The two variables are equal.
d) The two variables are not equal.

If gender and political party preference are not independent, it means __________ between gender and political party preference.
a) there is an association
b) there is no association
c) there is not enough information to determine an association
d) none

A test used to compare variances
a) Z-Test
b) P-Test
c) F-Team
d) A-Team

An F-Test can determine if the type of beverage employees consume affect their productivity, but it cannot determine...
a) what the effect is.
b) how often they use the restroom.
c) which beverage tastes the best.
d) none

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