Question

Here is a scatterplot of volume of oxygen consumed at rest on the horizontal axis and volume of oxygen consumed while running on the vertical axis. Suppose the value of r is .73. Volume Consumed at Rest Volume Consumed While Running 0.1 0.2 0.3 0.4 0.5 0.6 0.7 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 a. There is an outlier. Give an estimate of the coordinates of the outlier. b. What happens to r if one removes the outlier? Briefly explain your

Answer 1

1. 0.66 and 2.4

2. the value of r would increase after the removal of the outlier.

Explanation:

. An outlier is a deviation from other values in a random sample. The outlier is usually much smaller or larger than other values.the coordinates of the outliers are approximately 0.66 and 2.4

2. When the outlier is removed, the data will not be as much scattered as it was earlier. The regression line is moving up so it would go a bit further from 0.73. therefore since this 0.73, the value of r would increase after the removal of the outlier.