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