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Grade 12 Statistics and Probability Concepts
Grade 12 Scatter Plots CCSS: HSS-ID.C.8
Grade 12 Represent and Determine Probability
If 4! is equal to 4 x 3 x 2 x 1, then 9! is equal to which expression?
1. 9 x 8 x 7 x 6 x 5 x 4
2. 9 x 1
3. 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1
4. 9 x 4
Grade 12 Collecting and Interpreting Data
Grade 12 Represent and Determine Probability
Grade 12 Represent and Determine Probability
If a scatterplot has a correlation coefficient of r = -0.62, it can be described as
1. weak positive.
2. weak negative.
3. strong positive.
4. moderate negative.
5. moderate positive.
Grade 12 Statistics and Probability Concepts
Positive correlation is a relationship where
1. the value of one variable increases as the value of the other variable increases.
2. the value of one variable decreases as the value of the other variable decreases.
3. both variables increase to 1.
4. both variables are increasing at the same rate.
Grade 12 Collecting and Interpreting Data
Which of the following is an example of systematic sampling?
1. In a large school district, all teachers from two buildings are interviewed to determine whether they believe the students have less homework to do now than in previous years.
2. Every seventh customer entering a shopping mall is asked to select his/her favorite store.
3. Nursing supervisors are selected using random numbers in order to determine average annual salaries.
4. Mail carriers of a large city are divided into four groups according to gender and according to whether they walk or ride on their routes. Then 10 are selected from each group and interviewed to determine whether they have been bitten by a dog in the last year.
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