Economics

3. The square of the standard deviations
6. It is the most frequently observed data value
7. The symbol 'r' is a
8. The aggregate index formula using base period quantities is known as
10. this type of index number measures the general changes in prices between the current year and the base year
13. Coefficient of Variation was introduced by
15. The correlation coefficient will be -1 if the slope of the straight line in a scatter diagram is
16. It divides the distribution into hundred equal parts
19. This indicates lack of uniformity in the size of items
20. It concentrates on the centre of a distribution

1. Base year is also known as
2. The numerical value of a standard deviation can never be
4. When only two variables are studied, then such a correlation is called
5. When two variables move in the same direction, then such a correlation is called
9. It is the central value which represents the entire distribution
11. It is a statistical device for measuring changes in the magnitude of a group of related variables
12. The relationship between two variables of a series so that changes in the values of one variable are associated with changes in the values of the other variable
14. In order to save time in calculating mean from a data set containing a large number of observations, this is used
17. This cannot be determined graphically
18. It is also known as cost of living index numbers