1 Physical therapy typically is covered by health insurance when medically necessary. 2  For patients not covered by health insurance, physical therapy typically costs $50-$350 or more per session, depending on the length of the session, the service provided during the session and the provider. Physical therapy typically is covered by health insurance when medically necessary. 2  For patients not covered by health insurance, physical therapy typically costs $50-$350 or more per session, depending on the length of the session, the service provided during the session and the provider.
In the top metros, Zillow says accuracy ranges from a median error rate of 5% in Washington, D.C. to 9.5% in Pittsburgh. In some cities â including Houston, Kansas City, San Antonio and St. Louis â Zillow is unable to produce a Zestimate error rate because of state real estate disclosure laws.
In general, the degrees of freedom for an estimate is equal to the number of values minus the number of parameters estimated en route to the estimate in question. In the Martians example, there are two values (8 and 5) and we had to estimate one parameter (Î¼) on the way to estimating the parameter of interest (Ï2). Therefore, the estimate of variance has 2 - 1 = 1 degree of freedom.