3.1 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 a positive correlation indicate in a scatter plot?

Back

A positive correlation indicates that as one variable increases, the other variable also increases.

Front

What does a negative correlation indicate in a scatter plot?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Front

What does 'no association' mean in the context of scatter plots?

Back

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

Front

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

Back

A strong correlation is identified when the data points are closely clustered around a straight line.

Front

What is the difference between strong and weak correlation?

Back

Strong correlation means the data points are closely aligned to a line, while weak correlation means the points are more spread out.

Front

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

Back

It means that as one variable increases, the other variable decreases significantly.

Front

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

Back

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

Front

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

Back

The slope indicates the direction and steepness of the relationship between the two variables.

Front

How can outliers affect the interpretation of a scatter plot?

Back

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