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प्रश्न
Choose the correct alternative:
Least square method of fitting a trend is
विकल्प
Most exact
Least exact
Full of subjectivity
Mathematically unsolved
MCQ
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उत्तर
Most exact
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Time Series Analysis
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संबंधित प्रश्न
Define Time series
Mention the components of the time series
Define secular trend
Discuss about irregular variation
Define seasonal index
The sales of a commodity in tones varied from January 2010 to December 2010 as follows:
| In Year 2010 | Sales (in tones) |
| Jan | 280 |
| Feb | 240 |
| Mar | 270 |
| Apr | 300 |
| May | 280 |
| Jun | 290 |
| Jul | 210 |
| Aug | 200 |
| Sep | 230 |
| Oct | 200 |
| Nov | 230 |
| Dec | 210 |
Fit a trend line by the method of semi-average
Choose the correct alternative:
A time series is a set of data recorded
Choose the correct alternative:
A time series consists of
Fit a straight line trend by the method of least squares to the following data
| Year | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 |
| Sales | 50.3 | 52.7 | 49.3 | 57.3 | 56.8 | 60.7 | 62.1 | 58.7 |
What is the sum of the first 50 terms of the series (1 × 3) + (3 × 5) + (5 × 7) + ...?
