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Q. What is the modal value for the numbers 4, 3, 8, 15, 4, 3, 6, 3, 15, 3, 4.

Q. In a regression analysis if r2 = 1, then :

Q. A distribution consists of three components with total frequencies of 200, 250 and 300 having means 25, 10 and 15 respectively. Find the mean of the combined distribution.

Q. The following numbers represent the ages of people on a bus: 3, 6, 27, 13, 6, 8, 12, 20, 5, 10. Calculate their mean of their ages.

Q. The ratio of price of single commodity in a given period to its price in another period is called the

Q. The marks obtained by 9 students in a test are 25, 20, 15, 45, 18, 7, 10, 38 and 12. Find the median.

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

Q. Periodic movements with duration longer than a year are called

Q. The measure of dispersion which uses only two observations is called:

Q. The coefficient of correlation between the regression coefficients is: