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Dsimgts Reviewer Latest /Questions And Answers 100% Score!!!
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Dsimgts Reviewer Latest 2023-2024 /Questions AndAnswers 100% Score!!!
Quiz :If we first subtract the trend value (T) for each quarter from the original
value (Y), then average the values for a given quarter over successive years,
then for short-term data we get - Answer :Seasonal component
Quiz :Deseasonalised data involves: - Answer :Subtracting the Seasonal
component (S) from the original data (Y)
Quiz :We can use the regression line for past data for forecasting future data.
We are then using the line which - Answer :Minimizes the sum of squared
deviations of past data from the line
Quiz :When we use an approach which implies that the forecast for the next
time period should take into account the observed error in the earlier forecast
for the current time period, then we are using - Answer :Exponential
Smoothing
Quiz :Using regression analysis for forecasting, a high value for R^2 suggests
that we can - Answer :Be reasonably confident in our forecast
Quiz :Which of the following is a major problem for forecasting, especially
when using regression analysis? - Answer :The future may not follow the
patterns of the past
Quiz :Which of the following circumstances is likely to make a forecast using
(multiple) regression analysis less reliable? - Answer :Some important
variables are missing from the regression equation
Quiz :A qualitative forecast - Answer :predicts the direction, but not the
magnitude, of change in a variable.
Quiz :The first step in time-series analysis is to - Answer :plot the data on a
graph.
Quiz :Forecasts are referred to as naive if they - Answer :are based only on
past values of the variable.
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