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प्रश्न
Write a brief note on seasonal variations
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उत्तर
Seasonal Variations: As the name suggests, tendency movements are due to nature which repeat themselves periodically in every seasons.
These variations repeat themselves in less than one year time.
It is measured in an interval of time.
Seasonal variations may be influenced by natural force, social customs and traditions.
These variations are the results of such factors which uniformly and regularly rise and fall in the magnitude.
For example, selling of umbrellas’ and raincoat in the rainy season, sales of cool drinks in summer season, crackers in deepawali season, purchase of dresses in a festival season, sugarcane in Pongal season.
APPEARS IN
संबंधित प्रश्न
State the uses of time series
Define seasonal index
State the different methods of measuring trend
The following table gives the number of small-scale units registered with the Directorate of Industries between 1985 and 1991. Show the growth on a trend line by the free hand method.
| Year | No. of units (in '000) |
| 195 | 10 |
| 986 | 22 |
| 1987 | 36 |
| 198 | 62 |
| 1989 | 55 |
| 1990 | 0 |
| 1991 | 34 |
| 1992 | 50 |
Determine the equation of a straight line which best fits the following data
| Year | 2000 | 2001 | 2002 | 2003 | 2004 |
| Sales (₹ '000) | 35 | 36 | 79 | 80 | 40 |
Compute the trend values for all years from 2000 to 2004
Choose the correct alternative:
The value of ‘b’ in the trend line y = a + bx is
Choose the correct alternative:
The component of a time series attached to long term variation is trended as
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
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).
