Notes Over 8.5
15
Notes Over 8.5 Positive Correlation Negative Correlation No Correlatio n Points can be approximated by a positive slope Points can be approximated by a negative slope Points cannot be approximated by a line
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Notes Over 8.5. Positive Correlation. Points can be approximated by a positive slope. Negative Correlation. Points can be approximated by a negative slope. No Correlation. Points cannot be approximated by a line. Notes Over 8.5. Scatter Plots. - PowerPoint PPT Presentation
Transcript of Notes Over 8.5
Notes Over 8.5Positive CorrelationNegative Correlation
No Correlation
Points can be approximated by a positive slope
Points can be approximated by a negative slope
Points cannot be approximated by a line
Notes Over 8.5Scatter Plots
14 years education14 years education
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7 8 9 10 11 12 13 14 15 16 17
Years of Education
An
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$1,0
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1. Describe the person represented by point B.
$90,000 a year$90,000 a year
Notes Over 8.5Scatter Plots
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Years of Education
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2. How many people have 14 years of education?
$50,000;$50,000;What are their incomes? $80,000;$80,000; $90,000$90,000
Notes Over 8.5Scatter Plots
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Years of Education
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$1,0
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3. Describe the relationship between years of education completed and income. More years means more moneyMore years means more money
Notes Over 8.5Scatter Plots
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Years of Education
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4. What kind of correlation does this graph have?
PositivePositive
Notes Over 8.55. Make a scatter plot of the following data.
City Loc. Precip
Atlanta 34 51
Boston 42 42
Chicago 42 36
Duluth 47 30
Honolulu 21 22
Houston 30 46
Juneau 58 54
Miami 26 56
Phoenix 33 8
Portland 44 44
San Diego 33 10
Wichita 38 29 10 20 30 40 50 60
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Notes Over 8.55. Make a scatter plot of the following data.
10 20 30 40 50 60
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6. What kind of correlation does this graph have?
NoneNone
Pg 412 8 – 5 #1 – 6, 7 – 21 The following scatter plot shows the average time a fifteen students spent watching television and the average time they spent on physical activity in a day.
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Pg 412 8 – 5 #1 – 6, 7 – 21 1. Describe the student represented by point A.
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4 hr television4 hr television 2 hr Physical Activity2 hr Physical Activity
Pg 412 8 – 5 #1 – 6, 7 – 21 2. How many students had one hour of physical activity or less?
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8 students8 students
Pg 412 8 – 5 #1 – 6, 7 – 21 3. How many students spent four or more hours watching television?
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Pg 412 8 – 5 #1 – 6, 7 – 21 Is there a positive correlation, a negative correlation, or no correlation between the set of data in each scatter plot?
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No No CorrelationCorrelation
Pg 412 8 – 5 #1 – 6, 7 – 21 Is there a positive correlation, a negative correlation, or no correlation between the set of data in each scatter plot?
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Positive Positive CorrelationCorrelation
Pg 412 8 – 5 #1 – 6, 7 – 21 Is there a positive correlation, a negative correlation, or no correlation between the set of data in each scatter plot?
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Negative Negative CorrelationCorrelation
Pg 412 8 – 5 #1 – 6, 7 – 21
