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Q. The range of the scores 29, 3, 143, 27, 99 is:

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

Q. Value of b in the trend line Y = a + bX is:

Q. The scatter in a series of values about the average is called:

Q. Correlation analysis is a ..............................

Q. In a mesokurtic or normal distribution, µ4 = 243. The standard deviation is:

Q. If the mean of percentages, rates and ratios is to be calculated then the central tendency measure which must be used in this situation is

Q. Half of the difference between upper and lower quartiles is called:

Q. What is the value of the first quartile for observations 15, 18, 10, 20, 23, 28, 12, 16?

Q. In Price Index Numbers prices can either be ?