# linear regression - how to answer this?

**Question description**

Write
the equation of the regression line: **Predicted
Heart Rate = 100.294 – 38.617Dosage**** **

Predict the Heart Rate for a dosage of 0.32g: Predicted Heart Rate = 100.294 – 38.617 X 0.32 ≈ 87.9

Explain what the (negative) slope of - 38.6 represents:

For every unit increase in dosage, heart rate decreases 38.6 beats. (slope = rise/run = -38.6/1)

Explain what the y-intercept of 100.294 represents:

When dosage = 0 (no drug is given), the average heart rate is 100.294.## Tutor Answer

## 8 Reviews

**Quality**

**Communication**

**On Time**

**Value**

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors