Statistical analysis using spss

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  • 1. Statistical DataAnalysis Using SPSS Base
  • 2.  The main focus of this course is statistical analysis, which involves both descriptive statistics and inferential statistics. The major concern of descriptive statistics is to present information in a convenient, usable, and understandable form. Descriptive statistics is used to describe a set of data in terms of its frequency of occurrence, its central tendency, and its dispersion.
  • 3.  Inferential statistics, on the other hand, is not concerned with just describing the obtained data. It addresses the problem of making broader generalizations or inferences from sample data to population. This is the more complicated part of statistical analysis. A basic aim of inferential statistics is to use the sample scores for hypothesis testing.
  • 4.  Hypothesis Testing Research Hypothesis vs. Null Hypothesis Level of Significance Type I and Type II Errors
  • 5.  When a researcher is ready to test a specific hypothesis generated from a theory or to answer a research question posed, he or she is faced with the task of choosing an appropriate statistical procedure.
  • 6.  First, for any hypothesis posited, the statistical procedure chosen must offer a legitimate test of the hypothesis; otherwise, no meaningful interpretation of the results can be made. Second, choosing an inappropriate statistical procedure can also mean choosing a less-than- robust test that fails to detect significant differences between group scores or significant relationships between pairs of variables.
  • 7. 1. The nature of the hypothesis2.The levels of measurement of the variables to be tested
  • 8. • Test of Difference• Test of Relationship
  • 9. The levels at which the variablesare measured determine the statistical test that is used to analyze the data.
  • 10.  It stands for Statistical Product and Service Solutions. It originally stands for Statistical Package for the Social Sciences. Now renamed as PASW (Predictive Analytics Software) It is a comprehensive system for analyzing data. It can take data from almost any type of file and use them to generate tabulated reports, charts and plots of distributions and trends, descriptive statistics, and complex statistical analyses.
  • 11.  SPSS Base SPSS Advanced Model