The symbolic word for correlation coefficient is:
r
Y
Z
For the calculation of coefficient of correlation, following formula:
Spearman
Karl Pearson
Max D. Lorenz
Adam smith
Correlation between two or more variables can be:
Positive correlation
Negative correlation
Linear correlation
Correlation
The measure related to correlation in:
Arithmetic mean
Standard deviation
Range
Regression
Out of the following three measures, which can measure any type of relationship:
Scatter diagram
Spearman's rank correlation
Karl Person's coefficient of correlation
Normal distribution
The other name of rank correlation is:
Karl Pearson's correlation coefficient
Liner relation
Spearman's correlation coefficient
Changes in the two variable if exactly proportional and in opposite direction are expressed as:
Perfect correlation
Perfect Positive
Perfect negative correlation
When there is perfect positive correlation then the related line is:
Upward rising
Sloping downward light wards.
Parallel st.line to X axis
Parallel st.line to Y axis
There is no correlation when:
All the points lie on a straight line rising from left to right
All the points lie on a narrow band rising from left to right
All the points are scattered all over the graph.
When all the points are following a narrow band from left to right.
When both variables change in the same direction, then correlation is:
Positive
Negative
Multiple
Constant
