Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, showing the relationship between them using dots to represent data points.

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 association' mean in the context of scatterplots?

Back

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

Front

How can you identify a linear relationship in a scatterplot?

Back

A linear relationship can be identified if the data points 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 the slope of a line in a scatterplot represent?

Back

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

Front

How can outliers affect the interpretation of a scatterplot?

Back

Outliers can skew the results and may lead to misleading conclusions about the relationship between the variables.

Front

What is the significance of the x-axis and y-axis in a scatterplot?

Back

The x-axis typically represents the independent variable, while the y-axis represents the dependent variable.

Front

How do you make predictions using a scatterplot?

Back

Predictions can be made by identifying trends in the scatterplot and extrapolating the data to estimate values for unmeasured points.