Trend Lines and Scatter Plots

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship of two data sets.

Front

What is a line of best fit used for?

Back

A line of best fit is used to make predictions based on the data.

Front

If a scatterplot has no correlation, what does that mean?

Back

It means its ordered pairs have no predictable pattern.

Front

What does positive correlation indicate?

Back

Positive correlation indicates that as one variable increases, the other variable also increases.

Front

What type of correlation exists between the outside temperature and the amount of layers you wear?

Back

Negative correlation.

Front

What is correlation coefficient?

Back

The correlation coefficient is a numerical measure of the strength and direction of a relationship between two variables.

Front

What does a negative correlation indicate?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Front

What is the purpose of trend lines in scatter plots?

Back

Trend lines help to visualize the general direction of the data points.

Front

How can you identify a positive correlation in a scatter plot?

Back

A positive correlation is identified when the points slope upwards from left to right.

Front

What does it mean if a scatter plot shows no correlation?

Back

It means there is no discernible pattern or relationship between the two variables.