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AP Statistics Review Chapters 1-6 Flashcards | StudBud
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AP Statistics Review Chapters 1-6
AP Statistics Review Chapters 1-6
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Answers
1
Approximately what is point C's residual (bottom left point)?
-5
20
11
-11
2
In a normal distribution how much of the data falls within 2 standard deviations of the mean
65%
99.7%
95%
68%
3
The state administers a new test all 11th graders from 15 randomly selected schools. This is a
Stratified sample of 11th graders from the state
Matched pairs design
Cluster sample of 11th graders from the state
Random sample of 11th graders
4
Jan tips $2 and 20% of her meal. Meals have the M 9 and SD 3. What is the M and SD of her tips
$2, $1.8
$9.8, $0.3
$3.8, $3
$3.8, $0.6
5
Black bear weights are approximately normal with a mean of 250 and SD of 50. P (X > 325)?
.853
.933
.057
.067
6
A school with 15 classes of 24 picks 2 kids from each class with random digits. Sim Ran sample?
Yes, because each kid had the same chance of being chosen.
No, because not all possible groups can be chosen.
Yes, because the numbers were assigned randomly to the kids.
No, not all kids had the same chance of being chosen.
7
You measure age, height and ice cream preference. The number and type of variables are
3; two numbered and one open
3; two categorical and one quantitative
2; two quantitive
3; two quantitative and one categorical
8
Kiara hits the bull's eye 70%. What's the prb that her first bull's eye happens on her 3 throw.
.063
.233
.13
.7
9
P of snow is .4, P of school close is .3, P of BOTH is .2. What is P of school close GIVEN snow
0.5
0.286
0.75
0.2
10
Igor's exprmnt to see the effects of cocoa is blocked by gender. Whats this mean
Everyone will be the same gender; no gender variation
There will be a equal amount of boys and girls in each group
Both genders perform the same
Gender is not important to the survey
11
What is the median number of lizards for a zoo?
32
36
3.7
37
12
Joe randomly picks 3 lunch tables to sample in a cafeteria where grade levels are all mixed.
Simple random sample
Cluster sample
Blocking
Stratified sample
13
What is the probability that someone who doesn't like skateboards will like snowmobiles?
.286
.714
.647
.238
14
Sat math scores are normal with a mean 516 and SD 115. What score would be at the 65 percentile
561
631
560
572
15
For a strongly right skewed distribution, hiba would use which measures of center and spread
Median and Range
Median and Interquartile range
Mean and interquartile range
Mean and standard deviation
16
Calculate a Z score for David who can lift 140lb when the average is 100lb with SD of 25lb
1.6
1.5
2
1.25
17
Which of the following numbers is/are outliers 0, 3, 3, 3, 4, 5, 5, 6, 7, 7, 12, 14,
12 and 14
12, 14, and 0
none
14 only
18
If A and B are independent then they cannot be mutually exclusive
False
Can't tell
True
19
Which residual is the largest
E
A
B
D
20
How would you describe this boxplot
Left skewed
There isn't enough information to infer the shape
Approximately normal
Right skewed
21
What is boxed in red
R squared
Standard Error
Y intercept
Slope
22
The variance of the sum of two random variables X and Y is? (W = standard deviation)
(Wx)^2 + (Wy)^2
Wx + Wy only if x and y are independent
(Wx)^2 + (Wy)^2 only if x and y are independent
Wx + Wy
23
When asked to describe a distribution mention
The type (histogram, bell curve, box plot, etc.)
The shape and any obvious outliers
mean, IQR, normality/skewness
Shape, outliers, center, spread
24
This method prevents under-coverage
Randomized Design
SRS
Cluster Sampling
Stratified sampling
25
Quinn samples every 3rd person who leaves the room. Will this result in a simple random sample?
Yes, because everyone has the same chance of being selected
No, not every possible sample has a chance of being selected
Yes, this is systematic sampling and will make a special SRS
Yes, if everyone walks out the same door
