Bonnet Water Services, Inc. provides maintenance services for water-filtration systems for homeowners throughout the city of Fullerton. Customers contact the company with requests for maintenance service on their water filtration systems. To better prepare with labor resources for the services in the upcoming quarter, the company examine their data from the last 6 quarters. The data examined are: Repair time = how it took to complete a service, measured in hoursMonths since last service = number of months between servicesType of repair = electrical or mechanicalTravel distance = distance between the company and the residence The management believes the factors are related. If they want to predict repair time, the analysis they need to perform is