Nothing Improved Except the Average: A Kitagawa Decomposition of a Plumbing Franchise Network's First-Visit Resolution Rate Across 486,312 Residential Jobs, Nine Job Categories and Fourteen QuartersResolving to Nothing Improved Except the Average: A Kitagawa Decomposition of a Plumbing Franchise Network's First-Visit Resolution Rate Across 486,312 Residential Jobs, Nine Job Categories and Fourteen Quarters…