Scatterplot Introduction

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

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 do not affect the other.

Front

How can you identify a linear relationship in a scatterplot?

Back

A linear relationship can be identified if the points in the scatterplot form a straight line or a pattern that closely resembles a straight line.

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 correlations.

Front

What does it mean if a scatterplot shows a non-linear association?

Back

A non-linear association means that the relationship between the variables does not follow a straight line; it may curve or have a different pattern.

Front

What is the significance of the slope in a linear scatterplot?

Back

The slope indicates the direction and steepness of the relationship between the two variables; a positive slope indicates a positive correlation, while a negative slope indicates a negative correlation.

Front

How can outliers affect a scatterplot?

Back

Outliers can skew the results and may misrepresent the relationship between the variables, making it appear stronger or weaker than it actually is.

Front

What is the x-axis in a scatterplot?

Back

The x-axis is the horizontal axis that typically represents the independent variable in a scatterplot.