Economics

3. this type of index number measures the general changes in prices between the current year and the base year
5. The correlation coefficient will be -1 if the slope of the straight line in a scatter diagram is
6. The square of the standard deviations
8. Coefficient of Variation was introduced by
10. This indicates lack of uniformity in the size of items
11. When only two variables are studied, then such a correlation is called
12. The aggregate index formula using base period quantities is known as
13. This cannot be determined graphically
14. When two variables move in the same direction, then such a correlation is called
15. In order to save time in calculating mean from a data set containing a large number of observations, this is used
18. It is a statistical device for measuring changes in the magnitude of a group of related variables
19. The numerical value of a standard deviation can never be

1. It concentrates on the centre of a distribution
2. It divides the distribution into hundred equal parts
4. Base year is also known as
7. 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. It is also known as cost of living index numbers
16. It is the most frequently observed data value
17. It is the central value which represents the entire distribution