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. It helps to visualize the relationship between the variables.

Front

What does a positive correlation in a scatter plot indicate?

Back

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

Front

What does a negative correlation in a scatter plot indicate?

Back

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

Front

How can you identify the type of correlation in a scatter plot?

Back

You can identify the type of correlation by observing the direction of the points: if they trend upwards, it's positive; if they trend downwards, it's negative.

Front

What is the purpose of a trend line in a scatter plot?

Back

A trend line is used to summarize the relationship between the variables and can help in making predictions.

Front

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

Back

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

Front

How can you use a scatter plot to make predictions?

Back

You can use a scatter plot along with a trend line to estimate the value of one variable based on the value of another.

Front

What is the significance of outliers in a scatter plot?

Back

Outliers are points that fall far from the trend line and can significantly affect the correlation and predictions.

Front

What is the relationship between the age of a car and its value typically represented in a scatter plot?

Back

Typically, the relationship is negative, indicating that as the age of the car increases, its value decreases.

Front

What is the relationship between height and weight as indicated by a scatter plot?

Back

The relationship is usually positive, meaning that taller individuals tend to weigh more.