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प्रश्न
Choose the correct alternative:
The value of ‘b’ in the trend line y = a + bx is
पर्याय
Always positive
Always negative
Either positive or negative
Zero
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उत्तर
Either positive or negative
APPEARS IN
संबंधित प्रश्न
Define Time series
Define secular trend
Define seasonal index
State the two normal equations used in 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 following table shows the number of salesmen working for a certain concern:
| Year | 1992 | 1993 | 1994 | 1995 | 1996 |
| No. of salesman |
46 | 48 | 42 | 56 | 52 |
Use the method of least squares to fit a straight line and estimate the number of salesmen in 1997
Choose the correct alternative:
The components of a time series which is attached to short term fluctuation 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 `log_4 2 - log_8 2 + log_16 2 + ...............` to `oo` is
