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 linear relationship in a scatterplot indicate?

Back

A linear relationship indicates that as one variable increases or decreases, the other variable tends to do the same in a consistent manner, forming a straight line.

Front

What is the x-axis in a scatterplot?

Back

The x-axis is the horizontal axis of a scatterplot, typically representing the independent variable.

Front

What is the y-axis in a scatterplot?

Back

The y-axis is the vertical axis of a scatterplot, typically representing the dependent variable.

Front

What does a positive correlation in a scatterplot look like?

Back

A positive correlation is indicated by points that trend upwards from left to right, meaning as one variable increases, the other variable also increases.

Front

What does a negative correlation in a scatterplot look like?

Back

A negative correlation is indicated by points that trend downwards from left to right, meaning as one variable increases, the other variable decreases.

Front

What does no correlation mean in a scatterplot?

Back

No correlation means there is no discernible pattern in the data points; they are scattered randomly.

Front

How can you estimate values using a scatterplot?

Back

You can estimate values by finding the point on the scatterplot that corresponds to the x-value and then reading the y-value from that point.

Front

What is the purpose of a trend line in a scatterplot?

Back

A trend line is used to show the general direction of the data points and can help in predicting future values.

Front

What is the significance of outliers in a scatterplot?

Back

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