The following scatter plot depicts the number of chicken pox cases after 1988. The variable x represents the number of years after 1988. The variable y represents the number of cases in thousands. Does there appear to be a linear relationship? Explain your answer. a. Yes, there is a linear relationship. The data appears to have a negative correlation. b. Yes, there is a linear relationship. The data appears to have a positive correlation. c. No, there is not a linear relationship. The data seems random. d. No, there is not a linear relationship. There is no line which goes through all the points. Please select the best answer from the choices provided