Question
The ages (in years) of 10 men and their systolic blood pressures (in millimeters of mercury) are shown in the attached data table with a
The ages (in years) of 10 men and their systolic blood pressures (in millimeters of mercury) are shown in the attached data table with a sample correlation coefficient r of
0.908. Remove the data entry for the man who is
50 years old and has a systolic blood pressure of
201 millimeters of mercury from the data set and find the new correlation coefficient. Describe how this affects the correlation coefficient r. Use technology.
Age, x | Systolic blood pressure, y | |
---|---|---|
16 | 111 | |
26 | 120 | |
37 | 143 | |
44 | 133 | |
50 | 201 | |
64 | 183 | |
72 | 199 | |
29 | 133 | |
56 | 173 | |
23 | 199 |
Q.1 ( fill in the blank) The new correlation coefficient r (blank) going from 0.908 to (blank) round to three decimal places as needed.
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