A model for the design of instruments used in observing traits or testing unobservable traits. The preferred method of developing tests and scoring for tests, like the Likert scale.
The Mileage Tax Deduction. The Mileage Tax Deduction is a credit made for the 21st century. The amount of road travel we engage in for the most common aspects of our life is either wonderful or absurd depending on how you view things.ou get the choice of claiming the actual vehicle expenses deduction or taking the mileage rate. Obviously you want the one that affords you the biggest advantage. The actual expense deduction includes: 1  Gas.
The IRS sets a mileage rate for medical deductions that can change from year to year and during the year. For 2011, the rate was 19 cents a mile for trips between Jan. 1 and June 30, and 23.5 cents per mile from trips made between July 1 and Dec. 31.Add up your mileage and multiply the appropriate mileage rate to determine your mileage deduction.edical Expense Deduction. You can deduct medical mileage as part of your overall medical expense deduction. The IRS limits the medical deduction to the amount of medical expenses in excess of 7.5 percent of your Adjusted Gross Income.