Scatter Plots

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

Front

What does it mean if a scatter plot shows a positive correlation?

Back

A positive correlation means that as one variable increases, the other variable also tends to increase.

Front

What does it mean if a scatter plot shows a negative correlation?

Back

A negative correlation means that as one variable increases, the other variable tends to decrease.

Front

What does it mean if a scatter plot has no correlation?

Back

No correlation means there is no predictable relationship between the two variables; the data points do not follow any discernible pattern.

Front

How can you identify a linear relationship in a scatter plot?

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 scatter plots?

Back

Scatter plots are used to visually represent the relationship between two variables and to identify trends, correlations, or patterns in data.

Front

What does the term 'outlier' mean in the context of scatter plots?

Back

An outlier is a data point that lies far away from the other points in the scatter plot, indicating it may not fit the overall pattern.

Front

What is the significance of the axes in a scatter plot?

Back

The horizontal axis (x-axis) typically represents the independent variable, while the vertical axis (y-axis) represents the dependent variable.

Front

How can you determine the strength of a correlation in a scatter plot?

Back

The strength of a correlation can be determined by how closely the data points cluster around a line; tighter clusters indicate a stronger correlation.

Front

What is an example of a positive correlation?

Back

An example of a positive correlation is the relationship between hours studied and test scores; generally, more study time leads to higher scores.