1. Calculate the arithmetic and geometric averages for the following data set: Fecal coliforms/100 ml on different days on a bathing beach was reported as 2, 3, 1000, 15, 150, and 4000 2. Calculate the most probable number (MPN) for the following data set using MPN table given on the next slide. Volume added to each tube Number of positive tubes 10 ml 3 1.0 ml 1 0.1 ml mo Table 4. Most Probable Number Table Number of Tubes giving a postitive reaction MPN (per 100 95% Confidence Limits for a 5-tube set ml) 10 ml 1 ml 0.1 ml Low High 0 0 o 2 1 0 2 ci 2 0 4