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 trend line represent in a scatter plot?

Back

A trend line is a straight line that best represents the data points in a scatter plot, indicating the general direction of the relationship between the variables.

Front

How do you interpret a positive correlation in a scatter plot?

Back

A positive correlation means 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 is no correlation?

Back

No correlation means there is no apparent relationship between the two variables; changes in one do not affect the other.

Front

What is a strong positive correlation?

Back

A strong positive correlation means that the data points closely follow a straight line with a positive slope.

Front

What is a weak negative correlation?

Back

A weak negative correlation means that the data points show a slight downward trend but are widely scattered.

Front

How can you predict values using a trend line?

Back

You can predict values by finding the corresponding value on the trend line for a given input value.

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 identify trends, patterns, or correlations.

Front

What does it mean if a scatter plot has outliers?

Back

Outliers are data points that fall far away from the trend line, indicating unusual values that may affect the overall analysis.