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Duplicate of AP Statistics Midterm Review
Duplicate of AP Statistics Midterm Review
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StudBud Administration
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This is my version of a practice midterm test for the best class ever, AP Stats. Happy learning:)
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Questions
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Answers
1
All of the following are types of graphs used to display quantitative data except
Pictogram
Histogram
Stem and Leaf
Timeplot
2
All of the following are types of quantitative data except
Zip codes
Height
Distance
Weight
3
When the sample need to be less than 10% of the population, it is called the
10% rule
10% theorem
10% model
10% condition
4
The 5 number summary is used for this type of graph.
Histogram
Bar graph
Box plot
Pie chart
5
According to the model, ____ increases/decreases approx ____ by ____. This is
X in context
R in context
Slope in context
Y in context
6
A parameter is
A number calculated from a population.
A unit of stats
A number calculated from a sample.
The distance around a shape.
7
All of the following are stated in the Bernoulli trials except
Trials are independent
10% rule
Only 2 outcomes
Probability of success doesn't change
8
All of the following are w questions associated with data except
What
Which
Why
Who
9
When running a simulation, you should _____ it several times.
Invent
Repeat
Create
Try
10
The association in this picture has a r of
0.3
1
0
-1
11
What type of graph is this?
Bar chart
Histogram
Pie chart
Segmented bar graph
12
The Normal Model is also known as the
The 25-50-75-100 Rule
Best model
Fundamental Theroem of Stats
The 68-95-99.7 Rule
13
Describe the association.
Negative, curved, moderate
Positive, curved, moderate
Positive, curved, strong
Negative, curved, weak
14
Describe the association.
Negative, curved, weak
Trumpet
No association whatsoever
Positive, gap, very weak
15
Describe the association.
Positive, Quadratic, Strong
Negative, gap, quadratic moderate
Negative, outlier, linear, moderate
Positive, trumpet, weak
16
When re-exppressing data, you must run the ____ to check for a curve.
LinReg
Simulation
Stats buttom
Model
17
T/F: Experimental deisgn, principles,treatment, blinding, +response variable are needed 4 expe
True
False
18
The word and in a probability question signifies
Division
Multiplication
Subtraction
Addition
19
Being an _____ point means that it affects the slope
Noninfluential
Unique
Unusual
Influential
20
A 5 number summary is used for a
Pie chart
Histogram
Bar Graph
Box plot
21
A type of study where no treatments are imposed and cannot show cause and effect are called
experimental study
Perspective Studies
Retrospective Studies
Observational studies
22
Any point that doesn't fit with the rest is called an
Genius
Gap
Outlier
Influential
23
Which of the following is not a form of design?
Matched pairs
Completely Randomized
Double blind
Blocking
24
The median is the
The center number when data is sorted
The monkey in the middle
The average
Middle number
25
The experimental condition being imposed on the group is called the
Control group
Treatment
Level
Subjects
26
A z-score is
How far you are from the mean
How far you are from A
Your IQ score
How many standard deviations from the mean a value is
27
What is a random variable?
The randomness of an experiment
The mean number of surveys ran in a simulation
Value based on the outcome of a random event
A number generated in a simulation
28
This is when you multiply 0.05n and subtract that number from the data to figure out New mean
5% trimmed mean
5% data
0.05% trimmed mean
0.05 cut mean
29
This association has a r of
1
-1
0.3
0
30
For questions that ask for a percent to be calculated, we use
Invnorm
Normalcdf
31
Formula for Figuring out midrange
Min+max/range
1/2Range
Range^2
Range-1/2
32
An example of a systematic sample would be asking
Everyone in one group
Everyone you like
Every 10th person
Everyone in your school system
33
A ____study is where the data has already been collected and you study certain aspects.
Perspective
Retrospective
34
An attempt to try to get everyone in the population is called a
Representative sample
Experiment
Census
Approval
35
All of the following are ways you can rexpress data except
Log y
x^1/2
1/y
Log X, log y
36
In the LinReg equation, what does B stand for?
Strength
X int
y int
slope
37
The group where no treatment is applied is called the
Homogenous group
Control group
Uncontrolled group
Good group
38
What is the equation for LinReg?
Y=X
y=a+bx
Ax+By=C
Y=mx+b
39
A study where it starts now and goes into the future is called a
Perspective study
Retrospective study
40
In the LinReg equation, A stands for
Y-int
Slope
R^2
Strength
41
If a segmented bar chart shows notable differences of data, then it is
Unique
Independent
Not independent
Even
42
When questions ask if there is a relationship in the association, remember that
Correlation means causation
It is always true
Correlation does not mean causation
Correlation is independent
43
If you calculate a positive residual, the actual value was
Less than the predicted value
More than the predicted value
44
Type of sample. Randomly select a department and survey all the people in it.
Systematic
SRS
Cluster
Stratified
45
For questions that give you a percent and have you find an X , we use
Invnorm
Normal Model
46
What is a residual?
The difference b/t the observed y value+predicted y value
A plot
A number indicating how many SD you are from the mean
A plot that shiws a curve or no curve
47
What results from samples that do not represent the population?
People are upset they were left out
Under coverage
Bias
Inaccurate numbers
48
If a point is far left or far right from the mean, then it has
weight
leverage
skewness
height
49
For describing a association, we use the acronym
SuFUD
CUSS
USA
DUFuS
50
Lying is a type of
No response bias
Mean act
Cluster sample
Response bias
51
You can display categorical data on all of the following charts except
Bar graph
Pie chart
Histogram
Contingency Table
52
A sampling scheme that combines several sampling methods
A process
Simulation
Multistage
Multi processed
53
Describe the association.
Positive, Linear, Strong
No association whatsoever
Positive, curved, moderate
Negative, Linear, Strong
54
A placebo is
A blind group
Something that was on greys anatomy
A type of experiment
A fake treatment
55
Quadratic data has an r of
-1
0.8
1
0
56
When describing the data distribution of quantitative data, we use the acronym
FBI
NASA
DUFuS
CUSS
57
What does DUFuS stand for ?
Direction, Unique, Form, Scatter
Distance, Unusual, Form, Scatter
Direction, unusual, form, scatter/strength
Direction, Unusual, Formality, Strength
58
True or false. Categorical data does not make sense to calculate a mean.
False
True
59
The proportion of times the outcome would occur for a large number of repetitions is called
Independence
A simulation
Probability
An event
60
If you calculate a negative residual, that means that the actual value was
Less than the predicted value
More than the predicted value
61
An effect is ____ _____ if it is too great to be caused by chance.
Systematically significant
Very significant
Systematically wrong
Quite significant
62
Making a prediction outside of the data given means you are
Hypothesizing
Extrapolating
Inferring
Exploring
63
You ask people if they are right handed until you get a left handed. This is a
Geometric model
Algebraic model
binomial model
Normal model
64
We use venn diagrams for
Statitics
Probability
Finding z scores
Comparing AP classes
65
The closer our proportion gets to the hypothetical probability
Law of small numbers
Theorem of stats
Law of large numbers
Law of statistics
66
How do you mathematically figure out if a point is an outlier or not?
Figure out the lower and upper fences
See if it looks unusual
Determine if it changes the slope of the data
If it looks weird it must be an outlier
67
What does CUSS stand for?
Center, shape, spread
Center, unique, spread, skewed
Center, unusual, shape, spread
Centroid, unusual, shape, spread
68
Describe the shape of this distribution.
Skewed left
Bimodal and skewed.
Uniform
Unimodal and symmetric
69
Phone numbers
Quantitative
Categorical
70
Which of the following is not a good way to sample a population?
Stratified
Systematic
Convience
Cluster
71
A and B have an r of 0.56. If A was less than the mean by 1.3 SDs, then B was _____ the mean
0.728 SDs below the mean
0.386 SDs above the mean
.0987 SD above the mean
0.728 z scores below the mean
72
If a ___ ____ is done correctly, it can determine cause and effect.
Stats simulation
Stats study
Experimental design
Response bias
73
If this point was removed from this association, would it increase or decrease?
Decrease
Increase
74
What is the term for the most common number?
Midrange
Mode
Median
Standard Deviation
75
SAT scores
Quantitative
Categorical
76
Another way to express y=a+bx is
Y=mx+b
y=my+b
Bo+Bix
y=bo+b1x
77
The two types of data we studied are
Quantitative and qualitative
Categorical and quantitative
Statistical and categorical
Research and analytical
78
Which is correct?
Both-Given/Both
Both+Given
Both|Given
Given|Both
79
Data are not curved if a residual
Shows a circle
Shows form
Shows a curve
Shows no form
80
if I multiply each X by 100, add 12 to each y, and switch X and y, r
stays the same
decreases
changes
increases
81
true or false. You must control variables, randomize, and replicate an experiment to be valid.
True
False
82
The first bulls eye is on the 3rd arrow
Stats model
Binomial model
Geomertic model
Normal model
83
Are a snow day and the number of car crashes that day positively or negatively associated?
Negative
Positive
84
The binomial model tells you
Percents
Number of people
The two models
Probabilities
85
What is the interquartile range?
Q3-Q1
Q2-Q1
Q4-Q3
Q2-Q4
86
Things that cannot happen at the same time are
Mutually inclusive
Mutually exclusive
Variance
Independence
87
When data is skewed, the mean is pulled
In the direction of the title
Towards the graph
In the direction of the skew
And is increased
88
True or false. The picture is an example of the normal model.
False
True
89
____% of the variation in y can be explained by X. This is
X in context
Y in context
R in context
R^2 in context
90
A tree diagram is used for
Calculating probabilities
Designing experiments
Finding z scores
Simulations
91
The word or in a probability question signifies
Multiplication
Subtraction
Addition
Division
92
A type of bias that only people that feel strong respond is called a
Under coverage
No response bias
Voluntary response bias
Response bias
93
Describe the shape of this distribution.
Unimodal and Symmetric
Bimodal
Skewed Right
unifrom
94
If x and y are swapped,
R doesn't change
R changes
R may change
R flips
95
A simple random sample is
Everyone in a space that has the same chance of selection
Really simple
Really easy
when you pick one person from each homogenous group
96
___blinding is when the subject does not know what group they belong to or what the study is on
Single
Double
Some
Triple
97
Weight
Quantitative
Categorical
98
Formula for finding a range.
Min-Max
Max/Min
Max-Min
Max+Min
99
This reduces variation and splits the subjects into homogenous groups.
Matching
Randomizing
Blinding
Blocking
100
Age groups
Categorical
Quantitative
