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