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Q. The arithmetic mean of a variable ‘x’ is denoted by the symbol.

Q. In Standard deviation , deviations are taken only from ---- values of series

Q. --- is used in quality control

Q. Important use of Index numbers is for

Q. ----- is not a factor responsible for seasonal variation

Q. Measures of dispersion are called averages of ----- order

Q. Which divides the value of a variable into two equal parts?

Q. In Laspear’s Index number ---- year quantities are used

Q. ----- is the easiest of all the methods for measuring trend

Q. Simplest possible measure of dispersion is