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प्रश्न
Choose the correct alternative :
Time-series analysis is based on the assumption that _______.
विकल्प
random error terms are normally distributed.
the variable to be forecast and other independent variables are correlated.
past patterns in the variable to be forecast will continue unchanged into the future.
the data do not exhibit a trend.
उत्तर
Time-series analysis is based on the assumption that past patterns in the variable to be forecast will continue unchanged into the future.
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संबंधित प्रश्न
The following data gives the production of bleaching powder (in '000 tons) for the years 1962 to 1972.
| Year | 1962 | 1963 | 1964 | 1965 | 1966 | 1967 | 1968 | 1969 | 1970 | 1971 | 1972 |
| Production | 0 | 0 | 1 | 1 | 4 | 2 | 4 | 9 | 7 | 10 | 8 |
Fit a trend line by graphical method to the above data.
The following table shows the index of industrial production for the period from 1976 to 1985, using the year 1976 as the base year.
| Year | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 |
| Index | 0 | 2 | 3 | 3 | 2 | 4 | 5 | 6 | 7 | 10 |
Fit a trend line to the above data by graphical method.
Choose the correct alternative :
The first step in time series analysis is to _______.
Fill in the blank :
The graph of time series clearly shows _______of it is monotone.
