stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
AP Statistics Review CBCS Chapters 1-6 Flashcards | StudBud
Explore
/
AP Statistics Review CBCS Chapters 1-6
AP Statistics Review CBCS Chapters 1-6
40 terms
·
StudBud Administration
·
57 plays
A coalition of frisky and fun statistics questions prepare you for a five
Flashcards
40 cards
F
Practice quiz
P
Host live
L
Questions
40
Answers
1
Sat math scores are normal with a mean at 516 and SD of 115. How many kids scored above a 650?
15%
12%
10%
24%
2
Black bear weights are approximately normal with a mean of 250 and SD of 50. P (X > 325)?
.067
.057
.853
.933
3
If A and B are independent then they cannot be mutually exclusive
Can't tell
True
False
4
A cluster sample where grades 9-12 are labeled 0-3 respectively might look like,
0, 0 , 0, 0, 0
1, 1, 1, 1, 1
0, 0, 1, 2, 3
3, 2, 2, 1, 0
5
Kiara hits the bull's eye 70%. What's the prb that her first bull's eye happens on her 3 throw.
.13
.063
.233
.7
6
Finn's exprmnt to see the effects of cocoa on school testing gender is blocked. Whats this mean
Both genders perform the same
Everyone will be the same gender; no gender variation
Gender is not important to the survey
There will be a equal amount of boys and girls in each group
7
Sat math scores are normal with a mean 516 and SD 115. What score would be at the 65 percentile
631
561
560
572
8
50% of houses have a puppy and 40% have a kitty. 20% of houses have both. What % have neither?
20%
10%
30%
25%
9
You measure age, height and ice cream preference. The number and type of variables Ian has are
3; two numbered and one open
3; two categorical and one quantitative
3; two quantitative and one categorical
2; two quantitive
10
For a variable to have a geometric distribution what condition has to be met?
All outcomes are equally likely
The probability of success has to be the same for each trial
The number of trials is fixed
Trials are independent
11
What is the median number of lizards for a zoo?
37
3.7
32
36
12
Which of the following statements abou Correlation is NOT true? (CC = correlation coefficient)
A CC of -.87 shows a stronger linear relationship than .7
Outliers can dramatically effect the CC
If the C is 0 there is no relationship between the variables
13
Which residual is the largest
B
A
E
D
14
Which of the following numbers is/are outliers 0, 3, 3, 3, 4, 5, 5, 6, 7, 7, 12, 14,
14 only
12 and 14
none
12, 14, and 0
15
How would you describe this boxplot
Left skewed
There isn't enough information to infer the shape
Right skewed
Approximately normal
16
The state administers a new test all 11th graders from 15 randomly selected schools. This is a
Random sample of 11th graders
Matched pairs design
Stratified sample of 11th graders from the state
Cluster sample of 11th graders from the state
17
This method prevents under-coverage
Randomized Design
SRS
Cluster Sampling
Stratified sampling
18
In a normal distribution how much of the data falls within 2 standard deviations of the mean
65%
95%
99.7%
68%
19
Rymy tips $2 and 20% of his meal. Meals have the M 9 and SD 3. What is the M and SD of his tips
$3.8, $3
$3.8, $0.6
$2, $1.8
$9.8, $0.3
20
Who makes the best quizs
J Bivy
Jimmy Westside
James
anyone else
21
Approximately what is point C's residual (bottom left point)?
-11
-5
11
20
22
A school with 15 classes of 24 picks 2 kids from each class with random digits. Random sample?
No, not all kids had the same chance of being chosen.
No, because not all possible groups can be chosen.
Yes, because each kid had the same chance of being chosen.
Yes, because the numbers were assigned randomly to the kids.
23
Quinn samples every 3rd person who leaves the room. Will this result in a simple random sample?
Yes, if everyone walks out the same door
No, not every possible sample has a chance of being selected
Yes, because everyone has the same chance of being selected
Yes, this is systematic sampling and will make a special SRS
24
A normal distribution has a mean of 30 and SD of 2.5. What value lies at the 97.5 percentile?
32.5
36
37.5
35
25
The variance of the sum of two random variables X and Y is? (W = standard deviation)
Wx + Wy
(Wx)^2 + (Wy)^2 only if x and y are independent
(Wx)^2 + (Wy)^2
Wx + Wy only if x and y are independent
26
The chance Bo will get AIDS after sex contact with an infected partner is about 1/4. This means
20 ppl having sex with I P it is likely 5 ppl will get AIDS
Of 10000 people having sex with I P 2500 will get AIDS
A person will be infected after exactly 4 contacts with I Ps
Of 200 people having sex with I P about 50 will get AIDS
27
A 52 card deck has 12 face cards. What is the prb of drawing 3 cards and getting 3 face cards?
0.1%
1%
0.5%
0.01%
28
(Pay attention only to table) What is the prb that the thing has at least 2 of the variable X
0.85
0.53
0.38
0.5
29
There are 5 outcomes to an expt that are calculated to be .34, .5, .42, 0, -.26. Conclusion?
One of the outcomes will occur 50% of the time
The sum of the individual probabilities is one.
An error was made
One of the outcomes will never occur
30
What shape is the histogram
Bi-modal
Approximately normal
Left skewed
Uniform
31
What is boxed in red
Y intercept
Slope
R squared
Standard Error
32
What is the standard error based on the Minitab Output
3.241
.511
.02325
12.22
33
You see a mean kid. Your first reaction is to...
Tell a teacher
Run
Politely bring his hurtful actions to his attention
Touch him
34
What is the probability that someone who doesn't like skateboards will like snowmobiles?
.647
.286
.238
.714
35
For a strongly right skewed distribution Elior would use which measures of center and spread
Median and Range
Median and Interquartile range
Mean and interquartile range
Mean and standard deciation
36
Calculate a Z score for David who can lift 140lb when the average is 100lb with SD of 25lb
1.5
1.25
1.6
2
37
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
0.75
0.286
0.2
38
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
39
What is the standard score/ Z-Score?
number of standard deviations away from the mean
Test Statistic
Shows the standard deviation
Parameter
40
Ramdog randomly picks 3 lunch tables to sample in a cafeteria where grade levels are all mixed
Stratified sample
Blocking
Simple random sample
Cluster saple
