graph slope

Question

Best-fit straight line slope estimation reduces random error by using:

RankGuru · Accepted Answer

Linear regression (Method of Least Squares) calculates the line that minimizes the sum of the squares of the vertical offsets of all points.
- Using **all** points compensates for individual random fluctuations in single readings.
- It provides more reliable values for slope and intercept than simply joining the first and last points.

Rank Guru

graph slope

Select the correct option: