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प्रश्न
Choose the correct alternative:
The value of ‘b’ in the trend line y = a + bx is
विकल्प
Always positive
Always negative
Either positive or negative
Zero
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उत्तर
Either positive or negative
APPEARS IN
संबंधित प्रश्न
State the uses of time series
Mention the components of the time series
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:
Factors responsible for seasonal variations are
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 sum of the series `log_4 2 - log_8 2 + log_16 2 + ...............` to `oo` is
Sum of n terms of series 1.3 + 3.5 + 5.7 + ______ is
Sum of the first n terms of the series `1/2 + 3/4 + 7/8 + 15/16 +`......... is equal to:
The sum of the series 3.6 + 4.7 + 5.8 + ....... upto (n – 2) terms
