Economics

3. It is the most frequently observed data value
6. It concentrates on the centre of a distribution
7. It divides the distribution into hundred equal parts
8. It is the central value which represents the entire distribution
10. In order to save time in calculating mean from a data set containing a large number of observations, this is used
13. Coefficient of Variation was introduced by

1. When only two variables are studied, then such a correlation is called
2. When two variables move in the same direction, then such a correlation is called
4. The numerical value of a standard deviation can never be
5. The relationship between two variables of a series so that changes in the values of o9ne variable are associated with changes in the values of the other variable
9. The square of the standard deviations
11. This cannot be determined graphically
12. This indicates lack of uniformity in the size of items