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Q. The suitable average for averaging the shoe sizes for children is:

Q. The mean deviation is minimum when deviations are taken from:

Q. The rank correlation coefficient of a debating contest involving 10 participants was calculated as 0.6. However, it was later discovered that the difference in the ranks of some participants was read as 8 instead of 3. Find the correct correlation coefficient:

Q. The component of time series useful for long term forecasting is

Q. Index nos. show changes rather than absolute amounts of change.

Q. In constructing index number geometric mean relatives are:

Q. The value of β2 can be:

Q. If the arithmetic mean is multiplied to coefficient of variation then the resulting value is classified as

Q. From which average, the sum of deviations is zero?

Q. When the values in a series are not of equal importance, we calculate the: