Scatterplot Check-In

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 linear association in a scatterplot indicate?

Back

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

Front

What does a negative linear association in a scatterplot indicate?

Back

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

Front

What is a non-linear association in a scatterplot?

Back

A non-linear association occurs when the relationship between the variables cannot be accurately represented with a straight line.

Front

What does 'no association' mean in the context of a scatterplot?

Back

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

Front

How can you determine the type of correlation from a scatterplot?

Back

You can determine the type of correlation by observing the direction of the points: upward for positive, downward for negative, and scattered for no correlation.

Front

What is the purpose of using scatterplots in data analysis?

Back

Scatterplots are used to visually assess the relationship between two quantitative variables and to identify trends, patterns, or outliers.

Front

What does the slope of a line of best fit in a scatterplot represent?

Back

The slope represents the rate of change between the two variables; a positive slope indicates a positive relationship, while a negative slope indicates a negative relationship.

Front

How can you estimate values from a scatterplot?

Back

You can estimate values by locating the corresponding point on the scatterplot and reading the value from the axes.

Front

What is the significance of outliers in a scatterplot?

Back

Outliers are points that fall far from the trend of the data and can significantly affect the correlation and interpretation of the data.