Scatterplots #2

Front

What is a scatterplot?

Back

A scatterplot 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 scatterplot indicate?

Back

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

Front

What does a negative correlation in a scatterplot indicate?

Back

A negative correlation indicates that as one variable increases, the other variable tends to decrease.

Front

What is a trend line in a scatterplot?

Back

A trend line is a straight line that best represents the data points in a scatterplot, showing the general direction of the relationship between the variables.

Front

How can you identify a strong positive correlation in a scatterplot?

Back

A strong positive correlation is identified when the data points are closely clustered around a line that slopes upwards from left to right.

Front

How can you identify a strong negative correlation in a scatterplot?

Back

A strong negative correlation is identified when the data points are closely clustered around a line that slopes downwards from left to right.

Front

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

Back

No correlation means that there is no apparent relationship between the two variables; the data points are scattered randomly.

Front

What is the purpose of using scatterplots in data analysis?

Back

Scatterplots are used to visually assess the relationship between two variables, helping to identify trends, correlations, and outliers.

Front

What is the significance of outliers in a scatterplot?

Back

Outliers are data points that differ significantly from other observations; they can indicate variability in the data or errors in measurement.

Front

How do you interpret the slope of a trend line in a scatterplot?

Back

The slope of a trend line indicates the rate of change between the two variables; a steeper slope suggests a stronger relationship.