Advertisements
Advertisements
Question
Define seasonal index
Advertisements
Solution
Seasonal Index for every season (monthly or quarterly) is calculated as follows
Seasonal Index (S.I) = `"Seasonal Average"/"Grand Average" xx 100`
If the data is given monthwise
Seasonal Index = `"Monthly Average"/"Grand Average" xx 100`
If quarterly data is given
Seasonal Index = `"Quarterly Average"/"Grand Average" xx 100`
APPEARS IN
RELATED QUESTIONS
What is the need for studying time series?
Explain the method of fitting a straight line
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
The sales of a commodity in tones varied from January 2010 to December 2010 as follows:
| In Year 2010 | Sales (in tones) |
| Jan | 280 |
| Feb | 240 |
| Mar | 270 |
| Apr | 300 |
| May | 280 |
| Jun | 290 |
| Jul | 210 |
| Aug | 200 |
| Sep | 230 |
| Oct | 200 |
| Nov | 230 |
| Dec | 210 |
Fit a trend line by the method of semi-average
Choose the correct alternative:
A time series is a set of data recorded
Choose the correct alternative:
The components of a time series which is attached to short term fluctuation is
Choose the correct alternative:
The additive model of the time series with the components T, S, C and I is
Choose the correct alternative:
The value of ‘b’ in the trend line y = a + bx 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
What is the sum of the first 50 terms of the series (1 × 3) + (3 × 5) + (5 × 7) + ...?
