If the value of variable $x$ is brought very close to a number ' $a$ ' by increasing or decreasing its value then it can be said that $x$ tends to $a$. It is denoted by $x \rightarrow a$.
State the assumptions of Karl Pearson's correlation coefficient.
Answer
Assumption of Karl Pearson's correlation Coefficient.
$(1)$ There is a linear 'relationship between two variables.
$(2)$ There is a cause and effect relationship between two variables.