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
If rxy is positive the relation between X and Y is of the type:
When Y increases X increases
When Y decreases X increases
When Y increases X does not change
When Y increases X decreases
If rxy = 0, then:
X increases with increase in Y
X increases with decrease in Y
X does not change with change in Y
Y does not change with change in X
Changes in the two variable if exactly proportional and in opposite direction are expressed as:
Perfect correlation
Perfect Positive
Positive correlation
Perfect negative correlation
The value of correlation coefficient is always:
More than zero
Between +1 and -1
Less than +1
Less than -1
The relation existing between income and expenditure is:
Negative correlation
Positive relation
No correlation
No certain relation
Correlation between two or more variables can be:
Perfect postive
All of the above
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 following scatter diagram shows that:
Correlation is perfect negative
Correlation is perfect positive
Correlation is low positive
Correlation is low negative
When both variables change in the same direction, then correlation is:
Positive
Negative
Multiple
Constant
