Advertisements
Advertisements
प्रश्न
The following figures relates to the profits of a commercial concern for 8 years
| Year | Profit (₹) |
| 1986 | 15,420 |
| 1987 | 15,470 |
| 1988 | 15,520 |
| 1989 | 21,020 |
| 1990 | 26,500 |
| 1991 | 31,950 |
| 1992 | 35,600 |
| 1993 | 34,900 |
Find the trend of profits by the method of three yearly moving averages
Advertisements
उत्तर
Computation of three-yearly moving averages
| Year | Profit (₹) | 3-Yearly Moving Total |
3-Yearly Moving Average |
| 1986 | 15420 | - | - |
| 1987 | 15470 | 46410 | 15470 |
| 1988 | 15520 | 5010 | 17336.666 |
| 1989 | 21020 | 63040 | 21013.333 |
| 1990 | 26500 | 79470 | 26490 |
| 1991 | 31950 | 94050 | 31350 |
| 1992 | 35600 | 102450 | 34150 |
| 1993 | 34900 | - | - |
The last column gives the trend of profits.
APPEARS IN
संबंधित प्रश्न
What is the need for studying time series?
Mention the components of the time series
State the two normal equations used in fitting a straight line
The following table gives the number of small-scale units registered with the Directorate of Industries between 1985 and 1991. Show the growth on a trend line by the free hand method.
| Year | No. of units (in '000) |
| 195 | 10 |
| 986 | 22 |
| 1987 | 36 |
| 198 | 62 |
| 1989 | 55 |
| 1990 | 0 |
| 1991 | 34 |
| 1992 | 50 |
Calculate the seasonal indices from the following data using the average method:
| Year | I Quarter | II Quarter | III Quarter | IV Quarter |
| 2008 | 72 | 68 | 62 | 76 |
| 2009 | 78 | 74 | 78 | 72 |
| 2010 | 74 | 70 | 72 | 76 |
| 2011 | 76 | 74 | 74 | 72 |
| 2012 | 72 | 72 | 76 | 68 |
Choose the correct alternative:
Factors responsible for seasonal variations are
Choose the correct alternative:
Least square method of fitting a trend is
A bullet of mass m and velocity a is fired into a large block of wood of mass M The final velocity of the system is
The nth term of the series 2 + 4 + 7 + 11 + ..... is
The sum of the series 3.6 + 4.7 + 5.8 + ....... upto (n – 2) terms
