Select true statement regarding Correlation
Types of correlation Scatter diagram Correlation coefficient Interpretation perfectly positive correlation Both lines haves a positive slope (at 45 degree each); superimposed r=+1 Rise in one variable leads to propoionate rise in other perfectly negative correlation Both lines have a negative slope (at 45 degree each); superimposed r=-1 Rise in one variable leads to propoionate fall in other Moderately positive correlation Both lines have a positive slope 0<r<+1 Rise in one variable leads to rise in other Moderately negative correlation Both lines have negative slope -1<r<0 Rise in one variable leads to fall in other No (absent) correlation Both lines are perpendicular r=0 Rise / fall in one variable leads to no change in other Spurious (false) correlation No paicular pattern observed - No paicular pattern observed
In moderately positive correlation, rise in one variable leads to rise in other
In perfectly negative correlation, rise in one variable leads to propoionate rise in other
In moderately negative correlation, fall in one variable leads to propoionate fall in other
In perfectly positive correlation, rise in one variable leads to propoionate fall in other
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