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Q. If Q3=20 and Q1=10, the coefficient of quartile deviation is:

Q. The cumulative frequency for a particular class is equal to 35. The cumulative frequency for the next class will be .

Q. A period for which index number is determined is called as ------

Q. In the class intervals 40 – 50, 50 – 60, the number 50 is included in which of the following?

Q. For a positively skewed distribution, mean is always:

Q. . The average salary of a group of unskilled workers is 10,000 and for a group of skilled workers is 15,000. Combines salary is 12,000. What is the percent of skilled workers?

Q. Which partition value divides the series into two equal parts.

Q. The value at the base time period serves as the standard point of comparison

Q. For a symmetrical distribution, Q1 and Q3 are 20 and 60 respectively. The value of median will be:

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