Introduction to SPSSStatistical package for social sciences used for the data entry and statistical analysis.SPSS is used by students and researchers.Main Pre-requisiteStatistical KnowledgeSPSS does not have a brain, it can't decide which analysis or graph is appropriate. It canonly follow commands.Important ConceptsConstantA characteristic that has same values for all individualsVariableA characteristic that can assume any one of several valuesVariable types1.numeric(numbers only)2.alphabetic (alphabets only)3.string (alphabets, numbers and special characters)Variable Measurement Level1.categorical/nominal2.ordinal3.interval4.ratioClassification of Variables1.independent variables