14. Attach the dataset 'quakes and produce a statistical summary of the variables depth and mag 15. Attach the dataset 'mtcars' and find the mean weight and mean fuel consumption for vehicles in the dataset (type help mtcars) for a description of the variables available). 16. Repeat the analyses of the datasets 'quakes' and 'mtcars' using the function apply to simplify the calculations. 14. Attach the dataset 'quakes and produce a statistical summary of the variables depth and mag 15. Attach the dataset 'mtcars' and find the mean weight and mean fuel consumption for vehicles in the dataset (type help mtcars) for a description of the variables available). 16. Repeat the analyses of the datasets 'quakes' and 'mtcars' using the function apply to simplify the calculations