Scatter Plots/Trends

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

Front

What does a positive correlation in a scatter plot indicate?

Back

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

Front

What does a negative correlation in a scatter plot indicate?

Back

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

Front

What does 'no correlation' mean in the context of a scatter plot?

Back

No correlation means there is no discernible relationship between the two variables; changes in one do not affect the other.

Front

How can you identify a trend in a scatter plot?

Back

A trend can be identified by observing the overall direction of the data points; they may form a line or curve.

Front

What is a trend line?

Back

A trend line is a straight line that best represents the data on a scatter plot, showing the general direction of the data.

Front

How can you use a trend line to make predictions?

Back

You can use a trend line to estimate the value of one variable based on the value of another variable.

Front

What is the purpose of analyzing scatter plots?

Back

Analyzing scatter plots helps to understand relationships between variables and to identify patterns or trends.

Front

What does it mean if a scatter plot shows a nonlinear association?

Back

A nonlinear association means that the relationship between the variables does not follow a straight line; it may curve or change direction.

Front

What is the significance of outliers in a scatter plot?

Back

Outliers are data points that differ significantly from other observations; they can affect the overall trend and correlation.