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Q. The sum of deviations of observations from their arithmetic mean:

Q. According to percentiles, the median to be measured must lie in

Q. The median of the data 13, 15, 16, 17, 19, 20 is:

Q. Relationship between correlation coefficient and coefficient of determination is that:

Q. Index no. for the base period is always taken as

Q. In quality control of manufactured items, the most common measure of dispersion is:

Q. An index time series is a list of nos. for two or more periods of time

Q. What is the median of 33, 86, 68, 32, 80, 48, 70?

Q. The arithmetic mean is 12 and the number of observations are 20 then the sum of all the values is

Q. If the sum of deviations from median is not zero, then a distribution will be: