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प्रश्न
State the uses of time series
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उत्तर
1. It helps in the analysis of the past behavior.
2. It helps in forecasting and for future plans.
3. It helps in the evaluation of current achievements.
4. It helps in making comparative studies between one time period and others.
Therefore time series helps us to study and analyze the time-related data which involves in business fields, economics, industries, etc.
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संबंधित प्रश्न
Define Time series
Explain cyclic variations
Define seasonal index
Use the method of monthly averages to find the monthly indices for the following data of production of a commodity for the years 2002, 2003 and 2004
| 2002 | 2003 | 2004 |
| 15 | 20 | 18 |
| 18 | 18 | 25 |
| 17 | 16 | 21 |
| 19 | 13 | 11 |
| 16 | 12 | 14 |
| 20 | 15 | 16 |
| 21 | 22 | 19 |
| 18 | 16 | 20 |
| 17 | 18 | 1 |
| 15 | 20 | 16 |
| 14 | 17 | 18 |
| 18 | 15 | 20 |
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:
A time series consists of
Choose the correct alternative:
Factors responsible for seasonal variations are
Choose the correct alternative:
The value of ‘b’ in the trend line y = a + bx is
Let An be the sum of the first n terms of the geometric series `704 + 704/2 + 704/4 + 704/8 + ...` and Bn be the sum of the first n terms of the geometric series `1984 - 1984/2 + 1984/4 + 1984/8 + ...` If An = Bn, then the value ofn is (where n ∈ N).
What is the sum of the first 50 terms of the series (1 × 3) + (3 × 5) + (5 × 7) + ...?
