Scatter Plots

Front

What is a scatter plot?

Back

A scatter plot is a graphical representation of two variables where each point represents an observation in the dataset, showing the relationship between the variables.

Front

What does a correlation coefficient indicate?

Back

A correlation coefficient indicates the strength and direction of a linear relationship between two variables, ranging from -1 to 1.

Front

What does a correlation of -1 signify?

Back

A correlation of -1 signifies a perfect negative linear relationship between two variables.

Front

What does a correlation of 1 signify?

Back

A correlation of 1 signifies a perfect positive linear relationship between two variables.

Front

What does a correlation of 0 signify?

Back

A correlation of 0 signifies no linear relationship between the two variables.

Front

What type of correlation is indicated by a downward slope in a scatter plot?

Back

A downward slope in a scatter plot indicates a negative correlation.

Front

What type of correlation is indicated by an upward slope in a scatter plot?

Back

An upward slope in a scatter plot indicates a positive correlation.

Front

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

Back

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

Front

What is the purpose of using scatter plots in data analysis?

Back

Scatter plots are used to visually assess the relationship between two quantitative variables and to identify trends, patterns, or outliers.

Front

What does it mean if a scatter plot shows no discernible pattern?

Back

If a scatter plot shows no discernible pattern, it suggests that there is no correlation or relationship between the two variables.