Statistics

Statistics

1. Branch of mathematics that deals with the analysis, interpretation and presentation of numerical data.

   • codification --> convert the data obtained into numbers.

2. Coding is assigning numbers to the observed or registered modalities of variables

3. Statistical Tests and Software

   • Statistical inference is the process of obtaining information or drawing conclusions from raw data
   • Statistical tests are methods for making inferences
   • correlational test indicates the relationship or connection between two sets of data

4. Validity and Reliability

   • Validity
     • refers to the grade in which an instrument really measures the variable that pretends to measure.
   • reliability
     • means that an instrument produces similar or compatible results in different clinical experiments or statistical tests

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