http:rtisuccessorg. Progress monitoring, one of the essential. components of Response to Intervention (RTI), is. characterized by repeated measurement of academic. performance that is conducted at least monthly. The. process may be used to assess studentsâ academic. performance over time, to quantify student rates of.
Calculating the Air Quality Index. The AQI is calculated by converting measured pollutant concentrations to a uniform index which is based upon peer-reviewed scientific evidence of the health effects associated with a pollutant.
Herfindahl-Hirschman Index Example Calculations The HHI is calculated by taking the market share of each firm in the industry, squaring them, and summing the result: HHI = s1^2 + s2^2 + s3^2 + ... + sn^2 (where s is the market share of the each firm expressed as a whole number, not a decimal)