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प्रश्न
Choose the correct alternative:
The component of a time series attached to long term variation is trended as
विकल्प
Cyclic variation
Secular variations
Irregular variation
Seasonal variations
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उत्तर
Secular variations
APPEARS IN
संबंधित प्रश्न
Mention the components of the time series
Define seasonal index
Explain the method of fitting a straight line
Find the trend of production by the method of a five-yearly period of moving average for the following data:
| Year | Production ('000) |
| 1979 | 126 |
| 1980 | 123 |
| 1981 | 117 |
| 1982 | 128 |
| 1983 | 125 |
| 1984 | 124 |
| 1985 | 130 |
| 1986 | 114 |
| 1987 | 122 |
| 1988 | 129 |
| 1989 | 118 |
| 1990 | 123 |
The annual production of a commodity is given as follows:
| Year | production (in tones) |
| 1995 | 155 |
| 1996 | 162 |
| 1997 | 171 |
| 19988 | 182 |
| 1999 | 158 |
| 2000 | 880 |
| 2001 | 178 |
Fit a straight line trend by the method of least squares
Choose the correct alternative:
The additive model of the time series with the components T, S, C and I is
Choose the correct alternative:
Least square method of fitting a trend is
From the following data, calculate the trend values using fourly moving averages.
| Year | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 |
| Sales | 506 | 620 | 1036 | 673 | 588 | 696 | 1116 | 738 | 663 |
The sum of the series `log_4 2 - log_8 2 + log_16 2 + ...............` to `oo` is
The sum of the series 3.6 + 4.7 + 5.8 + ....... upto (n – 2) terms
