The Strength of a Linear Relationship Between Two Numerical Variables

question 4

True/False

The strength of a linear relationship between two numerical variables may be illustrated by a line graph, where the closer the points form a line, the stronger the linear relationship between the two variables.

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Definitions:

Mean Absolute Deviation

The average of the absolute differences between each data point in a set of values and the mean of that set.

Sum of Squares

is a statistical technique used to measure the dispersion or variation within a data set, calculated by squaring the differences from the mean and summing them.

Regression Trend Line

A graphical representation in statistics that shows the relationship between two variables and forecasts trends and future values.

Exponential Smoothing

A time-series forecasting method for univariate data that applies decreasing weights to past observations.