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 when graphed.

Front

How can you predict values using a scatterplot?

Back

You can predict values by finding the trend line or pattern in the scatterplot and using it to estimate the value of one variable based on the value of another.

Front

What does it mean if a scatterplot shows no correlation?

Back

No correlation means that there is no discernible pattern or relationship between the two variables; the 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 quantitative variables, helping to identify trends, correlations, and outliers.

Front

What is an outlier in a scatterplot?

Back

An outlier is a data point that differs significantly from other observations in the dataset, often appearing far away from the trend of the other points.

Front

How do you identify a strong correlation in a scatterplot?

Back

A strong correlation is identified when the points in the scatterplot are closely clustered around a straight line, indicating a strong relationship between the variables.

Front

What does a positive slope in a scatterplot indicate?

Back

A positive slope indicates that as one variable increases, the other variable also increases, suggesting a positive correlation.

Front

What does a negative slope in a scatterplot indicate?

Back

A negative slope indicates that as one variable increases, the other variable decreases, suggesting a negative correlation.

Front

What is the x-axis in a scatterplot?

Back

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