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Biostatistics by P. Mariappan

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Chapter 7

Correlation and Regression Analysis

Objectives

After completing this chapter, you can understand the following:

  • The definition, meaning and significance of correlation coefficient, and rank correlation coefficient.
  • The construction of regression lines.
  • The utilization of the regression line concept to estimate the values.
  • Its implication towards the decision-making applications with respect to biological studies.
7.1 INTRODUCTION

We shall now study two [bivariate] or more variables [multivariate] simultaneously and make an attempt to find the relationship among the variables in quantitative/qualitative form. In reality, we have many such related variables such as crop per acre and fertilizer, height and weight, birth and death ...

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