Age Group Midpoint Diastolic Blood Pressure 5 60 7 63 9 69 11 74 13 75...

Age Group Midpoint	Diastolic Blood Pressure
5	60
7	63
9	69
11	74
13	75
15	71
17	77
19	85
21	78

a. Which of these variables - age group or blood pressure - are the independent and dependent variables?

Independent: Age ?

Dependent: Blood Pressure ?

b. Find the regression equation which best describes the relationship between these variables.

Y = a + bx?

c. Calculate the correlation coefficient for this regression equation for this sample.

Expert Solution

Answer a)

Here, Independent variable x = Age and Dependent Variable y = Diastolic Blood Pressure

Answer b)

The equation of the regression line is: y = 56.086 + 1.258*x

Answer c)

The correlation coefficient for this regression equation for this sample is 0.8933

orchestra answered 2 years ago

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