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.
The variance (Ï 2), is defined as the sum of the squared distances of each term in the distribution from the mean (Î¼), divided by the number of terms in the distribution (N). There's a more efficient way to calculate the standard deviation for a group of numbers, shown in the following equation: You take the sum of the squares of the terms in the distribution, and divide by the number of terms in the distribution (N). From this, you subtract the square of the mean (Î¼2). It's a lot less work to calculate the standard deviation this way.