what is the correlation between the return and the return what if correlation is zero between returns of a series do linear regression shows zero correlation what would result in zero correlation in a series do linear time series follow each other closely if there is zero correlation between returns, would the correlation be significant? why do all series keep close to one another what is the correlation of the returns in a series with a series? what does it mean when a series is cointegrated what it means when a correlation between returns is zero is there zero correlation between the two series? why does correlation between returns in series why does there is zero correlation between returns and growth rate? does zero correlation mean that there is no cointegration between returns why is the correlation between the returns of msn so low what correlation would be statistically significant if the returns were positively related in each series? if a linear series follows each other closely, what is the correlation for the growth rate which statement describes a linear cointegration test that shows that all series are positively related? why does a linear graph have an zero correlation? what is the correlation between growth rate