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 Interpretation of Regression Results Ross Enterprises maintains a fl eet of agricultural equipment for rental to local farmers. Ross maintains all its equipment in a company-owned facility. Data on maintenance costs and operating hours of the equipment have been collected for the past 24 months to help managers plan ï¬nancial needs.  Managers at Ross were initially excited about having the data and the analysis available for planning, but the initial regression results revealed the following equation:Â
Maintenance costs $10,564 – $67.13 X Operating hours   The coefï¬cient on operating hours was highly signiï¬cant and the adjusted R 2 was 0.89.
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How would you explain a negative coefï¬cient; does it seem likely that the more the equipment is operated, the less the company spends on maintenance? Â