Scatterplots Flashcard Review

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 association in a scatterplot indicate?

Back

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

Front

What does a negative association in a scatterplot indicate?

Back

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

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatterplot, showing the overall trend of the data.

Front

What are outliers in a scatterplot?

Back

Outliers are data points that are significantly different from other observations in the dataset, often lying far away from the trend.

Front

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

Back

A strong positive trend is identified when the points on the scatterplot are closely clustered around an upward-sloping line.

Front

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

Back

A strong negative trend is identified when the points on the scatterplot are closely clustered around a downward-sloping line.

Front

What does it mean if a scatterplot shows no association?

Back

No association means that there is no discernible pattern or relationship between the two variables being plotted.

Front

What is the purpose of the line of best fit?

Back

The purpose of the line of best fit is to summarize the relationship between the variables and make predictions based on the data.

Front

What is the difference between a weak trend and a strong trend in a scatterplot?

Back

A weak trend has points that are more spread out from the line of best fit, while a strong trend has points that are closely clustered around the line.