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AP Statistics Final Exam Review
AP Statistics Final Exam Review
39 terms
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Musgrove's final exam review
Flashcards
39 cards
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Practice quiz
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Questions
39
Answers
1
Individuals split into groups, a few are randomly selected from each group. Which type?
Simple Random Sample
Cluster Sample
Stratified Sample
Systematic Sample
2
Confidence interval is (3.54, 6.73) what's the point estimate?
6.73
5.135
3.54
1.595
3
Which type of test checks for an association between two CATEGORICAL variables?
2 prop z test
χ2 Test for independence
χ2 Test for goodness of fit
1 sample t test for slope
4
y-hat = 4.1 - 0.14(x), x=# credit hours, y-hat=predicted GPA. Find predicted GPA for 12 hours.
5.78
3.4
4.1
2.42
5
Compare the normal distributions A and B
Mean: A = B Stdev: A > B
Mean: A < B Stdev: A < B
Mean: A < B Stdev: A > B
Mean: A > B Stdev: A > B
6
X~N(456, 34) what proportion of values are above 476?
0.722
0.268
0.278
0.731
7
What's the IQR of this boxplot?
13
7
15
6
8
Lexi records her drive time to work every day for her year & calculates her mean daily commute.
Systematic Sample
Simple Random Sample
Census
Experiment
9
Find P(burrito | sophomore)
11/30
30/11
6/30
6/11
10
When you reject the Ho you...
do not have evidence to support the Ha
have evidence to support the Ha
have evidence to support the Ho
do not have evidence to support the Ho
11
Which symbol represents sample proportion?
μ
p-hat
x-bar
ρ
12
If you flip a fair coin 144 times, how many times do you expect to flip heads?
84
12
144
72
13
If P-value = 0.031 and α = 0.01 we should....
Accept the Ho
Fail to Reject the Ho
Make no decision
Reject the Ho
14
Which are both statistics?
ρ and μ
μ and x-bar
x-bar and p-hat
p-hat and ρ
15
X~N(15,2.3), 99.7% of the data is between what two numbers?
10.4 and 19.6
17.3 and 12.7
5.8 and 26.3
8.1 and 21.9
16
Which data type: points awarded to Hufflepuff.
Continous
Bivariate
Discrete
17
Which r represents the strongest linear relationship?
r = 0.5
r = 0.7
r = - 0.8
r = - 0.2
18
X~N(100, 25), what percent of the data is between 75 and 125?
68%
95%
100%
99.7%
19
As sample size increases what happens to the sampling distribution?
mean decreases
stdev increases
mean increases
stdev decreases
20
Which data type: which hogwarts house you are sorted into?
Bivariate
Quantitative
Categorical
21
Failing to reject the Ho when the Ho is true
Type I error
Type II error
Correct decision
Type III error
22
Confidence interval is (3.54, 6.73) what's the margin of error?
3.54
6.73
1.595
5.135
23
Which measure of center is most affected by extreme values?
Variance
Mean
Mode
Median
24
Individuals put into a line, every 31st person is surveyed. This is...
Systematic Sample
Cluster Sample
Simple Random Sample
Stratified Sample
25
Which symbol represents population mean?
ρ
x-bar
μ
p-hat
26
Failing to reject the Ho when the Ho is false
Type III error
Type II error
Correct decision
Type I error
27
Which are both parameters??
ρ and μ
μ and x-bar
p-hat and ρ
x-bar and p-hat
28
Which are both proportions??
x-bar and p-hat
μ and x-bar
p-hat and ρ
ρ and μ
29
X~N(100, 25), what percent of the data is between 50 and 150?
95%
68%
99.7%
100%
30
What's the probability of at least one earthquake?
0.1
0.4
1
0.5
31
test with a mean of 65 and a standard deviation of 4. What's the z-score a score of 72?
2.13
1.75
-1.75
7
32
Find P(Freshman | pizza)
3/20
10/20
3/50
3/10
33
Which type of data: time spent on the time turner by Hermione
Bivariate
Continuous
Discrete
34
Rejecting the Ho when the Ho is true
Type II error
Type III error
Correct decision
Type I error
35
If P-value = 0.031 and α = 0.10 we should....
Make no decision
Accept the Ho
Fail to Reject the Ho
Reject the Ho
36
Musgrove gives candy to 1st block, coffee to 2nd block, and nothing to 4th. Which is this?
Experiment! Treatments were applied.
Observational Study! *No* treatments were applied.
Experiment! *No* treatments were applied.
Observational Study! Treatments were applied.
37
Failing to reject the Ho when the Ho is false
Correct decision
Type I error
Type II error
Type III error
38
In a sample of 100 students, 14% are left handed. Construct a 95% confidence interval.
(0.05 , 0.23)
(0.02 , 0.25)
(0.10 , 0.18)
(0.07 , 0.21)
39
You have a 1/14 chance of winning $10 & 13/14 chance of losing $1. What is the expected value?
0.13
- 1
- 0.21
0
