8th Grade Final Review-Vocabulary

Front

What is the Mean Absolute Deviation (M.A.D.)?

Back

M.A.D. is a measure of the dispersion of a set of data points, indicating how spread out the values are from the mean. A larger M.A.D. means the data points are more spread out.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant value (k) in the equation y = kx, representing the ratio of two proportional quantities.

Front

What does non-proportional mean in a linear relationship?

Back

Non-proportional refers to a linear relationship where one quantity is not a constant multiple of the other, meaning the ratio between them is not constant.

Front

What is the 'run' in a graph?

Back

The 'run' refers to the horizontal change in a graph, specifically the change in the x-values.

Front

What does it mean when data points lie close to a line in a graph?

Back

It indicates a strong association or correlation between the two variables being graphed.

Front

Define proportional relationship.

Back

A proportional relationship is one where two quantities maintain a constant ratio, meaning as one quantity increases, the other increases at a consistent rate.

Front

What is a linear function?

Back

A linear function is a function that graphs to a straight line, represented by the equation y = mx + b, where m is the slope and b is the y-intercept.

Front

What is the slope of a line?

Back

The slope of a line is a measure of its steepness, calculated as the rise (change in y) over the run (change in x).

Front

What is the difference between independent and dependent variables?

Back

The independent variable is the one that is changed or controlled in an experiment, while the dependent variable is the one that is measured or affected.

Front

What is a scatter plot?

Back

A scatter plot is a graph that uses dots to represent the values obtained for two different variables, showing the relationship between them.