Compare the measure of variation.

Both classes have about the same range of test scores.

Determine the sampling frame.

Accessible soil around the dump

Identify the sample and the population.

S: Teens at the library | P: All students in the school

What is the placebo effect?

Patient that recieves a fake treatment and feels better

a line joining the bars in a histogram

The difference between a sampling and a census is

a census includes the whole population.

Compare the measure of variation.

A is just as consistent with their time to answer as B.

What is wrong with this pie chart?

The percents don't add up to 100%

Compare the measure of variation (range).

Team B has a noticeably more variation of goals per game.

What is the difference between frequency and relative frequency?

relative means percentage and frequency means counts

The most common age is 39 years.

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Questions 94

Answers

1
What is the expected value and standard deviation?
μ= 3.9; 𝞂= 3.43
μ= 4.5; 𝞂= 3.43
μ= 4.5; 𝞂= 0.9
μ= 6.5; 𝞂= 5.57
2
Which of these is NOT a measure of variation?
Interquartile Range
Standard Deviation
Range
Association
3
Determine the Sampling Method
Stratified Sampling
Convenience Sampling
Simple Random Sampling
Cluster Sampling
4
Compare the measure of variation.
Both classes have about the same range of test scores.
Class B has a higher range of test scores.
Class A has a higher range of test scores.
Class A tends to have higher test scores.
5
What is the compliment of landing on White?
Landing on White
Landing on Red
3/4
zero
6
Find the probability.
A)
B)
C)
D)
7
Determine the Sampling Method
Cluster Sampling
Stratified Sampling
Simple Random Sampling
Systematic Sampling
8
Determine the sampling frame.
Soul around a former waste dump
Accessible soil around the dump
Concentrations of toxic chemicals
16 soil samples
9
Permutation or Combination?
Combination
Permutation
10
Is this a histogram?
No; it's a box plot.
Yes!
No; it's a bar graph.
No; it's a stem-and-leaf plot.
11
Statistics come from _____; parameters come from _____.
populations; both populations and samples
samples; both samples and populations
samples; populations
populations; samples
12
Read the experiment below and indentify the INDEPENDENT VARIABLE
Smell of Gary's shell
The week SpongeBob rubs seaweed on his shell
The week he drinks Dr. Kelp
Treatment used for slimotosis
13
Find P(A and C). Are they mutually exclusive?
5/10 Not Mutually Exclusive
2/10 Mutually Exclusive
2/10 Not Mutually Exclusive
5/10 Mutually Exclusive
14
Identify the sample and the population.
S: Teens at the library | P: All students in the school
S: All students in the school P: Teens at the library
S: Student Council | P: Teens at the library
S: All students in the school | P: Student Council
15
Use the frequency table to help you answer the question below.
D
C
B
A
16
Using the tree diagram, calculate the probability that a chosen seed will grow
.66
.52
2.4
.24
17
Matt has a deck of normal cards. What's the probability of drawing either a king or a club?
.333
.317
.308
.327
18
What is the value of X in the following probability tree?
0.075
0.85
0.15
0.30
19
Find the IQR.
10
28
20
30
20
What is the placebo effect?
Patient that recieves a fake treatment &feels nothing
Patient that recieves legitimate treatment
Patient that recieves a fake treatment and feels better
Doctors drugging patients
21
Find P(B or C). Are they mutually exclusive?
5/10 Mutually Exclusive
5/10 Not Mutually Exclusive
10/10 Not Mutually Exclusive
10/10 Mutually Exclusive
22
The center is best described by what measure?
no center
mean
median
mode
23
What is an OGIVE?
a type of survey
a cumulative frequency table
another name for a bar graph
a line joining the bars in a histogram
24
The difference between a sampling and a census is
a census includes the whole population.
a census describes a sample.
a census is only conducted every 10 years.
a census requires fewer resources.
25
Which level of measurement uses greater than or less than?
Nominal
Ordinal
Interval
Ratio
26
This graph is a...
pareto chart
boxplot
bar chart
histogram
27
Are the events Mutually Exclusive?
Yes
No
28
Compare the measure of variation.
A is just as consistent with their time to answer as B.
Candidate A is much more consistent with the time to answer.
Candidate B tends to answer the questions FASTER.
Candidate B is much more consistent with the time to answer.
29
What is wrong with this pie chart?
Is not flat
Names aren't inside slices
The percents don't add up to 100%
Wrong Colors
30
Conditional Probability
3/8
3/5
3/4
3/12
31
What is the probability of landing on white?
3/4
4/5
1/4
1/5
32
A dice is rolled 3 times what is the probability all three times you roll an odd number?
3/6
2/8
1/8
1/2
33
Are the events Mutually Exclusive?
No
Yes
34
Permutation or Combination?
Combination
Permutation
35
How do you calculate standard deviation from a boxplot?
Q1 x Q3
the middle value
you can't
Q3 - Q1
36
Is the following a discrete probability distribution?
Yes
No
37
Evaluate the factorial.
16
24
10
4
38
Compare the measure of variation (range).
Team A has a noticeably more variation of goals per game.
Team B has a noticeably more variation of goals per game.
Both teams has about the same variation of goals per game.
39
Which box plot most likely represents the following data?
Plot 3
Plot 2
Plot 4
Plot 1
40
Find the expected value.
$349.3
$150
$350
$-150
41
What is the difference between frequency and relative frequency?
frequency is continuous and relative frequency is counts
frequency means percents and relative frequency means counts
relative means percentage and frequency means counts
relative frequency is continuous and frequency is counts
42
Which piece of information is NOT given by this box plot?
Outliers
The coldest season
The mean temperature
The warmest months
43
Are the events Mutually Exclusive?
Yes
No
44
This graph is a...
circle chart
boxplot
stem-and-leaf plot
dot plot
45
Is this a Pareto Graph?
No, its a Bar Graph
Yes, it is a Pareto Graph
No, its a Ogive
No, its a histogram
46
which histogram would have the larger standard deviation?
a
b
c
47
Are A and B Independent of Mutually Exclusive?
Mutually Exclusive
Both
Neither
Independent
48
Identify the level of measurement: Highest Grade Level Completed
Interval
Ordinal
Nominal
Ratio
49
Describe the this box plot:
Skewed Right
Unimodal
Skewed Left
Symmetrical
50
In this stem and leaf plot, the mode is
41
27
21
happy
51
Interpret the mode.
The average age is 39 years.
The middle age is 39 years.
The most common age is 39 years.
The central tendency is 39 years.
52
Identify the level of measurement: Year of Graduation
Ordinal
Interval
Ratio
Nominal
53
Compare the measure of variation.
Sport and Political magazines have about the same range.
Political magazines have a much higher range.
Sport magazines have a higher range.
Political magazines have more words per sentence.
54
Factorial natation
120
2!
4920
2
55
Permutation or Combination?
Combination
Permutation
56
What is the Permutation formula?
r!/(n-r)!
n!r!/(n-r)!
n!/(n-r)!
n!/(r!*(n-r)!)
57
Is the following a discrete probability distribution?
No
Yes
58
Is this a histogram?
Yes!
No; it's a bar graph.
No; it's a stem-and-leaf plot.
No; it's a box plot.
59
What is the IQR of this box plot?
5
9
42
4
60
What is the formula of combination?
n!/r!(n-r)!
n/(n!-r)!
n!/r(n-r)!
r/n-r
61
Box & Whisker plot
1, 5, 5, 6, 6, 6, 8, 13, 19, 20
1, 3, 5, 6, 6, 8, 13, 14, 19, 20
1, 2, 3, 5, 7, 8, 8, 13, 19, 20
1, 3, 5, 6, 7, 7, 8, 13, 19, 20
62
A time series graph can help you predict data for times you DON'T have. Which is true?
At 2:50, there will probably be 28 people.
At 1:40, there will probably be 5 people.
63
Which of these does NOT measure center?
standard deviation
mean
median
64
Compare the measure of variation (IQR).
Team A has a noticeably more variation of goals per game.
Both teams has about the same variation of goals per game.
Team B has a noticeably more variation of goals per game.
65
Identify the level of measurement: Gender
Ratio
Interval
Nominal
Ordinal
66
the IQR tells us...
the 50th percentile
the range of the middle 50% of the data
the range of all of the data
between the minimum and Q1
67
Are A and B Independent, Mutually Exclusive, both or neither?
Neither
Mutually Exclusive
Both
Independent
68
Describe the shape of this histogram.
Unimodal
Skewed left
Uniform
skewed right
69
Describe the histogram.
unimodal, skewed left, multiple gaps and outliers
multimodal, skewed right, multiple gaps and outliers
unimodal, skewed right, multiple gaps and outliers
bimodal, skewed left, multiple gaps and outliers
70
Find the probability.
A)
D)
B)
C)
71
The center is best described by what measure?
mean
mode
no center
median
72
Interpret the median.
The most common age is 39 years.
50% of respondents are aged 39 years or less.
The central tendency is 39 years.
The average age is 39 years.
73
What is wrong with this pie chart image?
The colours are wrong
The percentage should be in each part
They are not equal
The names should be smaller
74
The difference between an observational study and an experiment is
Experiment has a treatment - observational study doesn't
Observational study has subjects - Experiment doesn't
Experiment occurs in a lab - observational study doesn't
Observational study has no merit - experiments are important
75
The standard deviation is...
The average distance of the observation from their mean
Objects described by a set of data
An observation that falls outside the overall pattern
The midpoint of the distribution
76
Determine the Sampling Method
Systemic Sampling
Stratified Sampling
Simple Random Sampling
Convenience Sampling
77
Find the probability.
A)
D)
C)
B)
78
Determine the Sampling Method
Cluster Sampling
Convenience Sampling
Simple Random Sampling
Stratified Sampling
79
Which of the following statements about this box plot is incorrect?
The median age of female Oscar winners is 35.
The maximum age of male Oscar winners is 87.
The minimum age for females is 22.
The third quartile value for females is 43.
80
Which list of data will have a smaller standard deviation?
Data set B
They will be the same
Data set A
Can not be determined
81
What is the median of the box plot?
17
16
14
18
82
Find the standard deviation
0.19
0.32
1.23
0.44
83
Interpret the mean.
The middle age is 39.69 years.
The most common age is 39.69 years.
The central tendency is 39.69 years.
The average age is 39.69 years.
84
Conditional Probability
0.33
0.67
0.5
0.25
85
What is a confounding variable?
When effects from 3+ variables can't be distinguished
When effects from 2+ variables can't be distinguished
When effects from 3+ variabled can be distinguished
When effects from 2+ variables can be distinguished
86
Identify the level of measurement: Number of Years at Job
Interval
Nominal
Ratio
Ordinal
87
Are the events Mutually Exclusive?
Yes
No
88
3 cards are drawn from a deck with replacement. Find the probability that all are red cards
1/2
1/8
3/2
2/3
89
Is this a histogram?
No; it's a bar graph.
Yes!
No; it's a box plot.
No; it's a stem-and-leaf plot.
90
What's the rule for finding outliers?
values that lie 1.5 x IQRs above Q3 or below Q1
1.5 x IQR below Q3 and above Q1
there is no rule for finding outliers
1.5 Q3 and 1.5 Q1 between the IQR
91
Is the variable qualitative or quantitative?
Quantitative
Qualitative
92
The center is best described by what measure?
mode
no center
median
mean
93
Find the expected value
3.4
3.3
3.6
3.5
94
In this stem and leaf plot, 9|4 means
94%
9.4%
$94
An "A"

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