What level of fertilizer to use in order to maximize the yield? See the plan for an early experimental farm where controlled agricultural tests could be conducted.
The calculations for ANOVA are somewhat involved. I summarize them in this document (download and print).
Megastat calculates the required values and the ANOVA table in this problem.
In this problem we are asked to conduct a one-way ANOVA test on the mean fuel consumption values of three groups of vehicles: (1) Small, (2) mid-size, and (3) trucks.
EnerGuide Award Winners : Downloaded from http://oee.nrcan.gc.ca/transportation/personal/pdfs/most-efficient-vehicles-2007.pdf.
(Complete set of Fuel Consumption Ratings for all vehicles can be found here.)
When we compare the mean values for these three groups, we see that there is no significant difference. Here is the Megastat/Excel file which shows a p-value of almost 0.64.