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प्रश्न
State whether the following is True or False :
Seasonal variation can be observed over several years.
पर्याय
True
False
उत्तर
Seasonal variation can be observed over several years True.
APPEARS IN
संबंधित प्रश्न
Use the method of least squares to fit a trend line to the data in Problem 1 above. Also, obtain the trend value for the year 1975.
The following table gives the production of steel (in millions of tonnes) for years 1976 to 1986.
| Year | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 |
| Production | 0 | 4 | 4 | 2 | 6 | 8 | 5 | 9 | 4 | 10 | 10 |
Fit a trend line to the above data by the graphical method.
Moving averages are useful in identifying ______.
Choose the correct alternative :
The following trend line equation was developed for annual sales from 1984 to 1990 with 1984 as base or zero year. Y = 500 + 60X (in 1000 Rs). The estimated sales for 1984 (in 1000 Rs) is:
Which component of time series refers to erratic time series movements that follow no recognizable or regular pattern?
_______ component of time series is indicated by periodic variation year after year.
_______ component of time series is indicated by a long wave spanning two or more years.
Cyclical variation can occur several times in a year.
Irregular variation is not a random component of time series.
Choose the correct alternative:
The following trend line equation was developed for annual sales from 1984 to 1990 with 1984 as base or zero year.
Y = 500 + 60X (in 1000 ₹). The estimated sales for 1984 (in 1000 ₹) is
Choose the correct alternative:
An overall upward or downward pattern in an annual time series would be contained in which component of the times series?
______ components of time series is indicated by a smooth line
______ component of time series is indicated by periodic variation year after year.
State whether the following statement is True or False:
Seasonal variation can be observed over several years
Cyclical variation can occur several times in a year.
