Which is the example of negative correlation?
Age of husband and age of wife
Increase in cost of advertisement and increase in sales
Demand of a commodity may go down as a result of rise in prices
Price of commodity and amount of supply
The range of simple correlation coefficient is:
0 to infinity
Minus one to plus one
Minus infinity to infinity
0 to one
The symbolic word for correlation coefficient is:
r
Y
Z
0 to hundred
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
The following scatter diagram shows that:
Correlation is perfect negative
Correlation is perfect positive
Correlation is low positive
Correlation is low negative
When there is perfect positive correlation then the related line is:
Upward rising
Sloping downward right wards.
Parallel st.line to X axis
Parallel st.line to Y axis
Correlation between two or more variables can be:
Positive correlation
Negative correlation
Perfect postive
All of the above
When there is positive relation between two variables, than necessary:
Both variables decrease
Both variable increase
Both the variables increase or decrease
One variable decreases and other variable increases
