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