TABLE 14-4
A real estate builder wishes to determine how house size (House) is influenced by family income (Income) and family size (Size) .House size is measured in hundreds of square feet and income is measured in thousands of dollars.The builder randomly selected 50 families and ran the multiple regression.Partial Microsoft Excel output is provided below: 
Also SSR (X1 ∣ X2) = 36400.6326 and SSR (X2 ∣ X1) = 3297.7917
-Referring to Table 14-4,what are the residual degrees of freedom that are missing from the output?
Definitions:
Preventive Maintenance
Regular and systematic inspection, cleaning, and replacement of worn parts, materials, and systems to prevent sudden failure and downtime.
Breakdown Maintenance
Maintenance work performed after a machine or system fails to restore it to operational condition.
MTBF Distribution
Mean Time Between Failures Distribution, a statistical representation of the expected time between failures for a system or component, crucial for reliability analysis.
Standard Deviation
A measure of the amount of variation or dispersion of a set of values, indicating how much the values deviate from the mean.
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