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Q. If there is a very strong correlation between two variables then the correlation coefficient must be:

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

Q. If the mode is 14 and value of mean is 5 then the value of median is

Q. Find the mode of the set (8, 5, 7, 10, 15, 21, 5, 7, 2, 5)

Q. In statistics out of 100, marks of 21 students in final exams are as 90, 95, 95, 94, 90, 85, 84, 83, 85, 81, 92, 93, 82, 78, 79, 81, 80, 82, 85, 76, 85 then mode of data is

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

Q. The range of the values -5, -8, -10, 0, 6, 10 is:

Q. In constructing index number geometric mean relatives are:

Q. The strength (degree) of the correlation between a set of independent variables X and a dependent variable Y is measured by

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