Stats Chapter 3 - Review (3.2-3.6)

Front

What is a scatterplot?

Back

A graphical representation of the relationship between two quantitative variables, showing how much one variable is affected by another.

Front

What does a non-linear negative correlation indicate in a scatterplot?

Back

As one variable increases, the other variable tends to decrease, but the relationship does not follow a straight line.

Front

How do you find the equation of the line of best fit?

Back

Use statistical methods such as least squares regression to determine the line that minimizes the distance between the data points and the line.

Front

What is interpolation?

Back

Estimating a value within the range of known data points.

Front

What is extrapolation?

Back

Estimating a value outside the range of known data points.

Front

What are residuals in statistics?

Back

The differences between observed values and the values predicted by a statistical model.

Front

What does a trend line represent?

Back

A line that shows the general direction of a dataset, indicating the relationship between variables.

Front

What is the purpose of a line of best fit?

Back

To summarize the relationship between variables and make predictions based on the data.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation implies that one variable directly affects the other.

Front

What is the formula for a linear equation?

Back

y = mx + b, where m is the slope and b is the y-intercept.