Before you start reading this unit, you should:

  • Know calculating mean and standard deviation for a given data
  • Know some basic ideas of plotting graph and draw inference from a graph

Learning Objectives

After going through this unit, you would be able to:

  • Understand the importance and limitations of correlation analysis
  • Know the difference between linear and nonlinear correlation, positive and negative and simple, partial, and multiple correlation
  • Know how and whether variables are correlated through shatter display
  • Calculate correlation coefficient for univariate and bivariate distributions

In the earlier chapters, we have seen variables that are dependent on one another. Now in this chapter let us ...

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