Suppose a researcher is interested in a new method for increasing forced vital capacity (FVC) in asthmatic children. The following table represents the FVC for a group of children before and after the intervention is initiated.

16. Suppose a researcher is interested in a new method for increasing forced vital capacity (FVC) in asthmatic children. The following table represents the FVC for a group of children before and after the intervention is initiated FVC FVC after baseline intervention 73.0% 78.2% 72.6% 82.3% 69.4% 78.2% 81 3% 82.4% 76.8% 82.3% 74.2% 83.6% 76.9% 83.8% 80.2% 84.6% 71.6% 80.2% ET 78.3% 86.4% A) Create a stem and leaf plot detailing the increase in FVC after intervention and describe it with relation to its spread. B) Calculate the average change in FVC with the intervention