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प्रश्न
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 |
तक्ता
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उत्तर
| Year | Sales | 4-Yearly moving total | 4-Yearly moving average | 4-Yearly centered moving average |
| 1990 | 506 | - | - | |
| 1991 | 620 | - | - | |
| 2835 | 708.75 | |||
| 1992 | 1036 | 719 | ||
| 2917 | 729.25 | |||
| 1994 | 673 | 738.75 | ||
| 2993 | 748.25 | |||
| 1995 | 588 | 758.25 | ||
| 3073 | 768.25 | |||
| 1996 | 696 | 776.375 | ||
| 3138 | 784.5 | |||
| 1997 | 1116 | - | - | 793.875 |
| 3213 | 803.25 | |||
| 1998 | 663 | - | - |
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Time Series Analysis
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संबंधित प्रश्न
What is the need for studying time series?
State the uses of time series
Define secular trend
Discuss about irregular variation
State the two normal equations used in fitting a straight line
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 |
Calculate the seasonal indices from the following data using the average method:
| Year | I Quarter | II Quarter | III Quarter | IV Quarter |
| 2008 | 72 | 68 | 62 | 76 |
| 2009 | 78 | 74 | 78 | 72 |
| 2010 | 74 | 70 | 72 | 76 |
| 2011 | 76 | 74 | 74 | 72 |
| 2012 | 72 | 72 | 76 | 68 |
Choose the correct alternative:
The components of a time series which is attached to short term fluctuation is
Choose the correct alternative:
Factors responsible for seasonal variations are
The sum of the series 3.6 + 4.7 + 5.8 + ....... upto (n – 2) terms
