A graph titled Values of Cars has age of car (years) on the x-axis and Value of car (thousands of dollars) on the y-axis. Points are grouped together and decrease. Point (10, 15) is above and to the right of the cluster.
Which statement about the scatterplot is true?
The point (10, 15) shows there is no relationship between the age of a car and the value of a car.
By excluding (10, 15), a better description can be given for the data set.
By including (10, 15), the description of the data set can be understated.
Although (10, 15) is an extreme value, it should be part of the description of the relationship between the age of a car and the value of the car.
1 answer
The statement that is true about the scatterplot is:
By excluding (10, 15), a better description can be given for the data set.
This is because the point (10, 15) is an outlier relative to the other data points that show a general trend of decreasing value as the age of the car increases. Excluding outliers can often provide a clearer understanding of the overall pattern in a dataset.
