Exam 7: Forecasting

Use the data given below to answer the following question(s). The table below shows the car sales from the year 2002-2007.The forecaster assumes a smoothing constant of 0.8 and uses the exponential smoothing model to determine the forecast for the future. -From the data given above,determine the number of forecast values.

If A_t is the actual value of the time series at time t,F_t is the forecast value for time t,and n is the number of forecast values,the formula used to calculate the mean square of errors is ________.

Use the data shown below to answer the following question(s). The table below shows the sales details of a kind of vegetable sold at a department store for each week. -For the given data,the value of the root mean square error is ________.

Use the data shown below to answer the following question(s). The table below is the data set of the Shiller Real Home Price Index for the years 1985-2000. -Setting k = 3,determine the value of the root mean square of errors.

Use the data given below to answer the following question(s). The table below shows the industrial lathe sales from the years 2000-2005.The forecaster uses the regression method to determine the forecast for the future. -For the data given above,determine the sales forecast for the year 2011.

Use the data given below to answer the following question(s). The table below shows the sales of a gaming console for the first 6 months of the year 2011. The forecaster uses the weighted average model to determine the forecasts.He assumes a 40% weight for the most recent reading,30% weight for the second most recent reading,20% for the third most recent reading,and 10% for the fourth most recent reading. -For the data given above,the number of forecast values is ________.

If the sales forecaster at Dino Croc Inc.-before launching a new game-decides to use the method of historical analogy to obtain a forecast,he/she should ________.

How do indicators and indexes help in forecasting?

Use the data given below to answer the following question(s). The sales details for 6 weeks of a particular type of switches,called the "Twitch," are shown in the table below.The value of k is set at 2. -Using the given data,determine the value of the mean square error.

Use the data given below to answer the following question(s). The table below shows the car sales from the year 2002-2007.The forecaster assumes a smoothing constant of 0.8 and uses the exponential smoothing model to determine the forecast for the future. -From the data given above,what is the forecast-in 000s-for the year 2004?

Use the data given below to answer the following question(s). The table below shows the car sales from the year 2002-2007.The forecaster assumes a smoothing constant of 0.8 and uses the exponential smoothing model to determine the forecast for the future. -From the data given above,what is the forecast-in 000s-for the year 2006?

Use the data given below to answer the following question(s). The sales details for 6 weeks of a particular type of switches,called the "Twitch," are shown in the table below.The value of k is set at 2. -For the given data,identify the value of the mean absolute percentage error.

If the sales forecaster at Dex-Starr Inc.-before launching a new 12-string guitar-decides to use the Delphi method to obtain a forecast,he/she should ________.

Use the data given below to answer the following question(s). The sales details for 6 weeks of a particular type of switches,called the "Twitch," are shown in the table below.The value of k is set at 2. -Using the given data,calculate the value of the mean absolute deviation.

Use the data given below to answer the following question(s). The table below shows the industrial lathe sales from the years 2000-2005.The forecaster uses the regression method to determine the forecast for the future. -For the data given above,determine the regression equation.

What is the gradual shift in the value of the time series known as?

In the Delphi method,the forecast is obtained through a comparative analysis with a previous situation.

Use the data given below to answer the following question(s). The table below shows the industrial lathe sales from the years 2000-2005.The forecaster uses the regression method to determine the forecast for the future. -For the data given above,what is the value of RMSE? [Hint: Round the forecast values to 3 decimal places.]

Use the data given below to answer the following question(s). The table below shows the sales of a gaming console for the first 6 months of the year 2011. The forecaster uses the weighted average model to determine the forecasts.He assumes a 40% weight for the most recent reading,30% weight for the second most recent reading,20% for the third most recent reading,and 10% for the fourth most recent reading. -Using the given data,calculate the value of the mean absolute deviation.

Write a brief note on the explanatory or causal models used in forecasting.