
AP Statistics Test #6 Review
Authored by Tracy KnightdaleHS
Mathematics
12th Grade
Used 4+ times

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22 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What happens to the shape of the t-distribution as the degrees of freedom increase?
The middle of the distribution becomes shorter, while the tails get higher, approximating a more uniform model.
The distribution becomes more and more similar to a normal distribution.
Nothing. But the results of the hypothesis test become less accurate.
The middle of the distribution becomes shorter, while the tails get taller, resulting in a bimodal model.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What are the two types of probability distributions?
Discrete and Continuous
Geometric and Binomial
Normal and Chi-Square
Skewed Left and Skewed Right
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between relative frequency and probability?
Relative is the theoretical; Probability is the actual
Relative is out of 100%; Probability depends on n, number of trials
Probability is the theoretical; Relative is the actual
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What types of data can be described by a frequency distribution?
Categorical
Quantitative
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the difference between a chi-square test and a correlation?
A chi-square test is where you can determine a cause-and-effect relationship; a correlation cannot
Nothing.
A correlation is used when you have two categorical variables; chi-square is when you have two quantitative variables.
A correlation is used when you have two quantitative variables; chi-square is when you have two categorical variables.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the shape of the chi-square distribution as the degrees of freedom increase?
Nothing.
Eventually it will go from being right-skewed to normal.
Eventually it will go from being right-skewed to left-skewed.
It's peak will increase, becoming more right-skewed.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Given the regression analysis, what is the equation of the LSRL?
y(hat)=38257x-0.163
y(hat)=38257-0.163x
y(hat)=2446-0.163x
y(hat)=2446x-0.163
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