Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data. Each point represents an observation in the dataset.

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 does no correlation mean in a scatterplot?

Back

No correlation means there is no apparent relationship between the two variables; changes in one variable do not predict changes in the other.

Front

How can you identify an outlier in a scatterplot?

Back

An outlier is a point that lies far away from the other points in the scatterplot, indicating it does not fit the general pattern.

Front

What is the correlation coefficient?

Back

The correlation coefficient is a numerical measure of the strength and direction of a linear relationship between two variables, ranging from -1 to 1.

Front

What does a strong positive linear association look like in a scatterplot?

Back

A strong positive linear association appears as points that closely follow a straight line with a positive slope.

Front

What does a weak positive linear association look like in a scatterplot?

Back

A weak positive linear association appears as points that are more spread out but still show a general upward trend.

Front

What does a strong negative linear association look like in a scatterplot?

Back

A strong negative linear association appears as points that closely follow a straight line with a negative slope.

Front

What does a weak negative linear association look like in a scatterplot?

Back

A weak negative linear association appears as points that are more spread out but still show a general downward trend.