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Answer Key: Statistics & Probability
C. Misleading Graphs
7, 1.1 & 6, 2.5
Sometimes the way in which data is presented may be misleading;
when
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Answer Key: Statistics & Probability
6, 1.1
4. The chart below shows the number of ice cream cones sold at
Buddy's Ice Cream Parlor from Monday
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On Your Own
6, 1.1
1. Find the median of the data set: cfw_3, 2, 5, 7, 3, 8, 7.
2
3
3
5
7
7
8
Answer: The
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Answer Key: Statistics & Probability
Now let's look at the second problem.
6, 3.5
Example: Ariel drew from a standard deck of cards and picked
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Answer Key: Statistics & Probability
7, 1.1 & 6, 2.5
2. The line graph below shows the number of claims filed with the Lost
& Found from Januar
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On Your Own
7, 1.2
1. The scatter plot shows two sets of data: dollars spent on food and
dollars spent on
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Answer Key: Statistics & Probability
6, 3.3
Let's look at another example:
Example: What is the probability that the spinner will stop at red?
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i. Conditional Probability
6, 3.1 & 6, 3.3
Now compare the last problem with this next problem:
Example: D
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On Your Own
7, 1.1
1. The vertical bar graph represents the average rainfall (as measured
in inches) in Mo
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Answer Key: Statistics & Probability
6, 3.3
Let's do another example together:
Example: When rolling a numbered cube (with the numbers 1 to 6 o
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Answer Key: Statistics & Probability
ii.
Even Number of Values
6, 1.1
If the number of values in the data set is even, order the values from
sm
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Answer Key: Statistics & Probability
7. A bag contained four green balls, three red balls, and two purple
balls. Jason removed one purple ball
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Answer Key: Statistics & Probability
Unit 2: Statistics: Representing & Interpreting Data
Data is information. Data is often presented visually
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Answer Key: Statistics & Probability
ii. Conditional Probability with a Twist
6, 3.1 & 6, 3.3
Look at the following example:
Example: Julien is
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No Mode
6, 1.1
It is possible to have a data set with no mode.
Example: Find the mode of this data set: cf
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Unit Quiz: The following questions appeared on the CAHSEE:
1. The graph below represents the closing price
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On Your Own
6, 3.3
1. Marla draws one card from a standard deck of cards. What is the
probability that she
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ii.
Unequal Likelihood
6, 3.3
There are times when the likelihood of the occurrence of any one
event is no
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On Your Own
7, 1.1
1. The line graph shows the changes in the federal hourly minimum
wage from October 193
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F. Dependent Events
6, 3.5
Two events are dependent if the outcome of the first event affects
the outcome
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iv.
Double Line Graphs
7, 1.1
On the CAHSEE, you may be asked to interpret a double line graph.
A double l
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Answer Key: Statistics & Probability
7, 1.1
4. The following line graph shows the distribution of grades in Ms.
Grey's Art Class.
How many stud
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18. The number of games won over four years for three teams is
shown on the graph below.
Which statement i
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B. Graphs
7, 1.1
Graphs are diagrams that show how two or more variables (or sets of
data) are related to
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15. After three hours of travel, Car A is about how many kilometers
ahead of Car B?
A. 2
B. 10
C. 20
D. 25
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3. What is the probability that the arrow will not stop on red if you
spin it one time? (Assume that the s
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E. Independent Events
6, 3.5
Two events are independent if the outcome of the first event does
not affect
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6, 3.3
2. Brenda tosses a coin in the air. What is the probability that the
spinner will not land on heads
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vii.
Line of Best Fit
7, 1.2
When there is a positive or negative relationship between data on a
scatter p