Final answer:
A linear model would be a good way to describe the relationship between the size of the team and completion time if the variables have a linear relationship.
Step-by-step explanation:
A linear model would be a good way to describe the relationship between the size of the team and completion time if the variables have a linear relationship. To determine this, you can create a scatter plot with the team size on the x-axis and the completion time on the y-axis. If the points on the scatter plot form a linear pattern, then a linear model would be appropriate for describing the relationship. You can also calculate the correlation coefficient to assess the strength and direction of the linear relationship. If the correlation coefficient is close to 1 (positive) or -1 (negative), it indicates a strong linear relationship.