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 weak positive correlation indicate in a scatter plot?

Back

A weak positive correlation indicates that as one variable increases, the other variable tends to increase slightly, but the relationship is not strong.

Front

What does a strong negative correlation indicate in a scatter plot?

Back

A strong negative correlation indicates that as one variable increases, the other variable tends to decrease significantly, showing a strong inverse relationship.

Front

What is a positive association in the context of scatter plots?

Back

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

Front

How can you identify a negative correlation in a scatter plot?

Back

A negative correlation can be identified when the points in the scatter plot slope downwards from left to right.

Front

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

Back

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

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 is the significance of the correlation coefficient?

Back

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

Front

What does a correlation coefficient of +1 indicate?

Back

A correlation coefficient of +1 indicates a perfect positive linear relationship between two variables.

Front

What does a correlation coefficient of -1 indicate?

Back

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