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
0 to hundred
The value of correlation coefficient is always:
More than zero
Between +1 and -1
Less than +1
Less than -1
The measure related to correlation in:
Arithmetic mean
Standard deviation
Range
Regression
The symbolic word for correlation coefficient is:
r
Y
Z
Changes in the two variable if exactly proportional and in opposite direction are expressed as:
Perfect correlation
Perfect Positive
Positive correlation
Perfect negative correlation
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 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
Linear correlation means that the correlation between two variables is:
Perfectly positive
Perfectly Negative
Positive or Negative relation and the degree of relationship between two variables is equal at different levels.
Correlation is zero
