Exam 1: Correlation Analysis and Coefficient of Correlation

If the ratio of change in one variable is equal to the ratio of change in the other variable, then the correlation is said to be .....................

If r= +1, the correlation is said to be ...................

Pearsonian correlation coefficient if denoted by the symbol ...............

The unit of Coefficient of correlation is ........................

When the values of two variables move in the opposite directions, correlation is said to be ............................

The -ve sign of correlation coefficient between X and Y indicates.............................

If dots are lying on a scatter diagram in a haphazard manner, then r = ......................

If all the points of a dot chart lie on a straight line parallel to the X-axis, it denotes .................................of correlation.

Product moment correlation method is also called ........................

Scatter diagram is also called ......................

If change in one variable results a corresponding change in the other variable, then the variables are.........................

...........................attempts to determine the degree of relationship between variables.

Coefficient of correlation explains:

The techniques which provide the decision maker a systematic and powerful means of analysis to explore policies for achieving predetermined goals are called..........................

When the amount of change in one variable leads to a constant ratio of change in the other variable, then correlation is said to be .........................

A high degree of +ve correlation between availability of rainfall and weight of weight of people is:

If the dots in a scatter diagram fall on a narrow band, it indicates a ....................... degree of correlation.

Numerical measure of correlation is called .....................

If all the points of a dot chart lie on a straight line vertical to the X-axis, then coefficient of correlation is ...................

When the values of two variables move in the same direction, correlation is said to be ............................