Of the math teachers, what percentage had 5 or more years of experience
Question 2
2.
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3.
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4.
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5.
In order, how should the numbers read in the missing column going from top to bottom?
Question 6
6.
Given these box plot distributions of daily high temperatures in two cities which statement is the most true?
Question 7
7.
given these displays which is the most true?
Question 8
8.
Which statement is true based on these box plot distributions of macaws?
Question 9
9.
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10.
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11.
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12.
Question 13
13.
What is the median of the following numbers?
6, 10, 10, 10, 5, 9, 3
Question 14
14.
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15.
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16.
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17.
Question 18
18.
What is the method used by both the textbook and Khan Academy to calculate if an element of a data set is an outlier?
Question 19
19.
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20.
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21.
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23.
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Question 29
29.
Which line fits the data graphed below?
Question 30
30.
7.5%
12%
15%
20%
25%
50%
0
1
2
17
18
cannot be determined from the given information
1
2
3
4
5
6
45
10
9
39
39.5
44
4, 3, 0, 3, 1, 0
0, 1, 2, 3, 4
1, 2, 3, 4, 5
0, 0, 1, 3, 3, 4
yes, yes, no, yes, yes
2, 1, 0, 2, 1
The center of St. Louis is greater than the center of Washington D.C.
The variability of St. Louis is greater than the variability of Washington D.C.
The range of Washington D.C. is greater than the range of St. Louis
The IQR of St. Louis is less than the IQR of Washington D.C.
The IQR of St. Louis is equal to the IQR of Washington D.C.
The range of Washington D.C. is equal to the range of St. Louis
A. the histogram allows us to see that there are 25 pumpkins while the box plot does not
B. the box plot allows us to see that the median is at 8 kilograms while the histogram does not
C. the box plot allows us to see a more accurate quartile breakdown than the histogram
A and B only are true
A and C only are true
A, B, and C are all true
wild macaws live longer on average that macaws in captivity
almost half of all macaws living in captivity live longer than any of the macaws in the wild
capitive macaws always live longer than wild macaws
all wild macaws have a shorter lifespan that captive macaws
a wild macaws can expect to live longer on average
a captive macaw is always happier given its expected longer lifespan
Which are appropriate descriptions for the dot plot?
the dot plot has a peak at 12 hours of sleep
the dot plot has a gap between 7 and 9 hours of sleep
the dot plot has a range of 12 hours of sleep
the dot plot data as a minimum of 0 hours of sleep
the dot plot has a maximum of 8 hours of sleep
What is the most appropriate description of the shape of the distribution?
the distribution is approximately symmetrical
the distribution is skewed to the right
the distribution is to small of a data set to determine its shape
the distribution is normal
the distribution is linear
What is the most appropriate description of the shape of the distribution?
the distribution is approximately symmetrical
the distribution is skewed to the right
the distribution is left-tailed
the distribution is right-tailed
not enough information to determine the shape of the distribution
9
11.5
12
13.5
15
17.5
10
9.5
6
9
3
5
The following data points represent the volume of gas in each race car driver's tank (in liters).
4, 5, 13, ?
If the mean of the data set is 7L, find the missing volume of gas.
2
3
4
5
6
A dog gave birth to 4 puppies. Three of the puppies had different masses between 145 and 157g, and one puppy had a mass of 59g.
The puppy that had a mass of 59g was then adopted, so that puppy was removed from the data set.
How will the removal of the puppy affect the mean and median?
the mean will decrease, and the median will increase
Both the mean and median will increase, but the mean will increase by more than the median
Both the mean and median will increase, but the median will increase by more than the mean
Both the mean and median will decrease, but the mean will decrease by more than the mean
Both the mean and median will decrease, but the median will decrease by more than the mean.
Find the mean of the data in the dot plot below.
7
0
5
15/2
8
The following data points represent the number of animal crackers in each kid's lunch box.
4, 4, 6, 7, 10, 11, 12, 14, 15
Find the interquartile range (IQR) of the data set.
6
8
10
12
14
Look it up the element on the periodic table to see if its atomic weight is within the middle 50% of atomic weights. If it is, then it is not an outlier, but if it isn't then it is an outlier.
Mutiply the IQR of the data set by 1.5. Add that product to the third quartile and subtract that product from the first quartile to determine the fences for the range of non-outlier elements, anything above or below the range of those fences is considered an outlier.
Add the IQR to the median to determine the upper fence for non-outlier numbers and subtract the IQR from the median to dermine the lower fence for non-outlier numbers. Anything beyond those fences in either direction is considered an outlier.
If it looks like an outlier then it is an outlier.
Outliers do not exist in data, they are only thought to exist by those who do not understand data.
Add the range of the data set to the median to determine the upper fence for non-outlier numbers and subtract the range from the median to dermine the lower fence for non-outlier numbers. Anything beyond those fences in either direction is considered an outlier.
Find the interquartile range (IQR) of the data in the box plot below.
8.5
7
6
4.5
2.5
3,4,5,9,9,10,12,13,15,16,18
3,4,8,9,9,12,12,13,13,16,18
3,4,7,9,9,10,12,13,13,16,18
3,4,7,9,9,11,12,13,13,16,18
3,4,7,9,9,10,12,13,15,16,18
none of the number sets could be represented by the box plot
0%
10%
20%
50%
80%
100%
Consider the density curve below.
Which of the following statements are true?
B. The mean of the density curve is greater than the median.
C. The median of the density curve is 3.
A and B
B and C
A and C
A group of Americans participated in a study that involved taking their temperatures during exercise is moderate heat. The participants had a mean body temperature of 104 degrees F and a standard deviation of 2 degrees F.
Doctors analyzing the results prefer to work in degrees Celsius, so they convert the data by applying the formula below to each data point:
If each temperature is converted to degrees Celsius, what will be the mean and standard deviation of the distribution of new temperatures?
Mean: 57.8 degrees C, Standard Deviation: 1.11 degrees C
Mean: 57.8 degrees C, Standard Deviation: 2 degrees C
Mean: 40 degrees C, Standard Deviation: -16.67 degrees C
Mean: 40 degrees C, Standard Deviation: 1.11 degrees C
Mean: 40 degrees C, Standard Deviation: 2 degrees C
The grades on a language midterm at Loyola are roughly symmetric with μ = 69, and σ = 4.0
Vanessa scored 61 on the exam.
Find the z-score for Vanessa's exam grade.
-2
-1
1
2
3
The Appalachian trail is a continuous hiking trail that passes through 14 states in the US. The histogram shows the length of the trail through each state.
What interval contains the 50th percentile for this data?
100 to 200 miles
200 to 300 miles
300 to 400 miles
500 to 600 miles
cannot be determined
The lifespans of lizards in a particular zoo are normally distributed. The average lizard lives 3.1 years; the standard deviation is 0.6 years.
Use the empirical rule (68-95-99.7%) to estimate the probability of a lizard living less than 2.5 years.
34%
68%
95%
99.7%
cannot be determined
An international cake competition attracted 50 bakers from around the world. The graph shown below displays the relationship between the amount of sugar in the cakes (in grams per 100 grams of cake) and the scores the cakes received.
Which statement is the best description of the association between these variables?
Cakes with more sugar always scored higher.
Cakes that had between 25 and 35 grams of sugar per 100 grams of cake scored higher.
Cakes that had between 15 and 25 grams of sugar per 100 grams of cake scored higher.
Cake scores and sugar content had no significant association
None of the above
The graph shown below shows the relationship between the age of drivers and the number of car accidents per 100 drivers in the year 2009.
What is the best description of this relationship?
Negative Linear Association
Downward Facing Quadratic Association
Upward Facing Quadratic Association
Exponential Decay Association
No Association
A
B
C
Both A and C only
Both B and C only
None of the lines fit the data
Julio distributed a survey to his fellow students asking them how many hours they spent playing sports in the past day. He also asked them to rate their mood on a scale from 0 to 10, with 10 being the happiest. Julio created the following scatterplot and regression line to show this relationship.
The fitted line has a y-intercept of 5.
What is the best interpretation of this y-intercept?
Students who had a mood rating of 0 must have spent 5 hours playing sports.
The best interpretation of the y-intercept is when the line moves through the x axis.
The average mood rating was 5.
When hours playings sports is 0 the mood averages a residual of 5 away from the prediction of the model.
The model indicates that students who spent 0 hours playing sports will have an average mood rating of 5.