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Q. If the sign of regression coefficient bxy is negative, then the sign of regression coefficient byx will be ........................

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

Q. When the constraints are a mix of ‘less than’ and ‘greater than’ it is called a problem having

Q. Geometric mean of regression coefficients will be ..............................

Q. If the plotted points of a scatter diagram fall on a narrow band, it indicates a. ............degree of correlation.

Q. If all the dots of a scatter diagram lie on a straight line falling from the upper left-hand corner to the lower right hand corner, the correlation is said to be ..........................

Q. Regression lines are also called .........................

Q. An approximate relation between QD and SD of normal distribution is ...............

Q. Baye’s theorem is based upon inverse probability.

Q. If a constant 30 is subtracted from each of the value of X and Y , the regression coefficient is ..........................