MIS372 Lecture Notes - Lecture 5: Pearson Product-Moment Correlation Coefficient, Lincoln Near-Earth Asteroid Research, Logistic Regression
1 Oct 2018
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Linear: the relationship can be explained with a straight line, constant change in one attribute because of change in the other. Non-linear: the relationship can be explained with a curve (or any non-straight line), non- constant change in one attribute as a result of change in the other: relation strength: High: changes in one attribute because of change in the other attribute are drastic/significant. Medium: changes in one attribute as a result of change in the other attribute are moderate. Low: changes in one attribute because of change in the other attribute are gradual/insignificant: correlation: It is a way of finding attribute relationships and their strength. Positive: both attributes change in the same direction (increase-increase/decrease-decrease) Negative: attributes change in the opposite direction (increase-decrease/decrease-increase) It is one of the several methods to find (linear) correlation. It is a value in [-1, +1], where; 1 = perfect negative / 0 = no correlation / +1 = perfect positive.
