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