Usually it means that each of the variables is dependent on the other.
if one changes, so does the other.
"If coefficient of correlation, "r" between two variables is zero, does it mean that there is no relationship between the variables? Justify your answer".
there is a strong relationship between the variables
relationship between 2 variables
It is a linear relationship, such as y=mx+b.
In 2-dimensions, it is a relationship between two variables of the form ax + by + c = 0
it is a direct relationship -eli martin
It means that the relationship between the x and y variables is not linear.
There are no relations between different variables. If you want to enable a relationship between variables, you must write the code to implement that relationship. Encapsulating the variables within a class is the most obvious way of defining a relationship between variables.
eta
The coefficient of determination, otherwise known as the r^2 value, measures the strength of the linear relationship between two quantitative variables. An r^2 value of 1 indicates a complete linear relationship while a value of 0 means there is no relationship.
Correlation is a way of testing whether there is a linear relationship between two variables of their transformed versions. If there is no correlation then all that it means is that there is no linear relationship between the two or between their transformed versions. It certainly does not mean that there is no relationship. For example, if y = a*x^2 + b where a and b are constants then, because of symmetry, the correlation between x and y is 0.
the relationship between variables and/or variables and values