Advertisements
Advertisements
प्रश्न
What is the need for studying time series?
Advertisements
उत्तर
We should study time series for the following reasons:
1. It helps in the analysis of past behaviour.
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.
APPEARS IN
संबंधित प्रश्न
Explain the method of fitting a straight line
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 consists of
Choose the correct alternative:
Least square method of fitting a trend is
Choose the correct alternative:
The value of ‘b’ in the trend line y = a + bx is
Choose the correct alternative:
The seasonal variation means the variations occurring with in
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 sum of the series `log_4 2 - log_8 2 + log_16 2 + ...............` to `oo` is
Sum of n terms of series 1.3 + 3.5 + 5.7 + ______ is
The sum of the series 3.6 + 4.7 + 5.8 + ....... upto (n – 2) terms
