e. Predicted – In this null model, SPSS has predicted that all cases are 0 on the dependent variable. f. Overall Percentage – This gives the percent of cases for which the dependent variables was correctly predicted given the model. In this part of the output, this is the null model. Mar 27, 2020 · Mortality rates are usually calculated over the period of one year. As the size of a population may change significantly, the mid-year point is usually taken as a rough guide. Mortality rates are always displayed in the form of a whole number, usually in the hundreds, per 1,000 or 100,000 people. Calculating Percentage Change Step-by-Step. To calculate a percentage increase, first work out the difference (increase) between the two numbers you are comparing As an example of calculating percentage change in a real-life scenario, consider Bob, who worked a total of 35 hours in January.Compute a new variable, average, calculating this information. Save the file. Exercise 8: Creating and saving output. This exercise uses the file results.sav created in Exercise 2. Use the Case Summaries command to produce a listing of your data. Save the SPSS output in a file called result1.spo. Produce a printout of the SPSS Viewer window.