Scatterplots

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 is a linear relationship in a scatterplot?

Back

A linear relationship is when the data points in a scatterplot can be approximated by a straight line.

Front

What is a nonlinear relationship in a scatterplot?

Back

A nonlinear relationship is when the data points do not follow a straight line and may curve or cluster in a different pattern.

Front

How can you identify a strong correlation in a scatterplot?

Back

A strong correlation is indicated by data points that are closely clustered around a straight line.

Front

What does it mean if there is no correlation in a scatterplot?

Back

No correlation means that there is no apparent relationship between the two variables; the points are scattered randomly.

Front

How do you interpret the slope of a line in a scatterplot?

Back

The slope indicates the rate of change between the two variables; a positive slope means an increase, while a negative slope means a decrease.

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 or patterns.

Front

What is the best prediction method using a scatterplot?

Back

The best prediction method involves drawing a line of best fit and using it to estimate values based on the relationship observed.