# Scale Factor

Abbreviation: S.F. (Not to be confused with s.f. for significant figure)

The number a which a shape’s sides are multiplied by in an enlargement.

Example: The scale factor from A to B is 2.

🔑Key Scale Factor Topics: Enlargement, Similar Shapes
👀Also Look up: Enlarge, Similar

# Column Vector

The matrix used to describe a translation or vector. The top number represents the horizontal movement and the bottom number the vertical movement.

Example:

🔑Key Column Vector Topics: Translation, Vectors
👀Also Look up: Matrix, Translate, Vector

# Line of Best Fit

A straight line drawn on a scatter graph, used to indicate the correlation. It can be used to work out estimates of data not plotted on the graph.

Example:

🔑Key Line of Best Fit Topics: Scatter Graphs
👀Also Look Up: Scatter Graph, Correlation, Data, Extrapolate

# Scatter Graph

Synonyms: Scatter Diagram, Scatter Plot

A graph which shows two variables for a set of objects. Used to spot relationships, or correlation, between the two sets of data.

Example:

🔑Key 2D Topics: Scatter Graphs
👀Also Look Up: Line of Best Fit, Data, Correlation, Extrapolate

# Correlation

The type of relationship two variables have with each other. Positive correlation is where as one variable gets larger, so does the other. Negative correlation is where as one variable gets larger, the other gets smaller. No correlation tells us that the variables are not linked.

Example: This graph shows positive correlation.

🔑Key Correlation Topics: Scatter Graphs
👀Also Look Up: Scatter Graph, Line of Best Fit, Data