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Q. An event whose occurrence is impossible, is called ......................

Q. In a ......................... distribution, quartiles are equi-distant from median.

Q. The word correlation usually implies.............................

Q. In a .............................. distribution, mean is equal to variance

Q. Region of feasible solution in LPP graphical method is called

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

Q. If m is the coefficient of correlation, then the value of m2 is known as .................

Q. Karl Pearson’s coefficient of correlation is denoted by the symbol ..................

Q. When r = -1, we may say that, there is ..........................

Q. In correlation analysis, P.E. = ....................0.6745