Scatterplots and Trendlines

Front

What is a line of best fit used for?

Back

To make predictions.

Front

What does a positive correlation in a scatter plot indicate?

Back

As one variable increases, the other variable also increases.

Front

What does a negative correlation in a scatter plot indicate?

Back

As one variable increases, the other variable decreases.

Front

What is a scatter plot?

Back

A graph that displays values for two variables for a set of data.

Front

What is the purpose of a trendline in a scatter plot?

Back

To show the general direction of the data points.

Front

What does it mean if there is no correlation in a scatter plot?

Back

There is no predictable relationship between the two variables.

Front

How can you determine the line of best fit?

Back

By visually assessing the data points and drawing a line that minimizes the distance to all points.

Front

What is the difference between a function and a non-function?

Back

A function has one output for each input, while a non-function may have multiple outputs for a single input.

Front

What does it mean if a scatter plot has a strong correlation?

Back

The data points are closely clustered around the trendline.

Front

What is the first step in analyzing a scatter plot?

Back

Identify the type of correlation (positive, negative, or none).