ANSWER:- 0
+3+3+(-3)/3= 3/3= 1
+3-1=2
+3-1=2
-3-1=-4
2+2+(-4)
4-4
0
0/3=0
If the errors produced by a forecasting method for 3 observations are +3, +3, and -3,...
The following table shows predicted product demand using your particular forecasting method along with the actual demand that occurred: FORECAST ACTUAL 1,490 1,540 1,390 1,490 1,690 1,590 1,742 1,640 1,790 1,690 a. Compute the tracking signal using the mean absolute deviation and running sum of forecast errors. (Negative values should be indicated by a minus sign. Round your "Mean Absolute Deviation", "Tracking Signal" to 2 decimal places and all other answers to the nearest whole number.) Period Forecast Actual Deviation...
In this problem, you are to test the validity of your forecasting model. Here are the forecasts for a model you have been using and the actual demands that occurred: WEEK mtindo FORECAST 840 870 970 970 1,020 ACTUAL 920 1,020 1,070 920 920 1,010 995 a. Use the method stated in the text to compute the MAD and tracking signal for each week. (Negative values should be indicated by a minus sign. Round your "Tracking Signal" to 1 decimal...
Which method of forecasting uses all the available observations? Naive. Moving averages. Exponential smoothing MAPE
You want to compare how two forecasting methods would perform on
some historical sales data. You will forecast the sales for months
4 through 19, calculate the mean absolute deviation (MAD) for both
methods, and you can claim that the one that has lower MAD
performed better, at least for the historical data.
a) The first method is known as the moving average method. The
forecast for a month will be the average sales of three previous
months. So, forecast...
Given forecast errors of 4, 8, and -3, what is the mean absolute deviation? A)4 B)3 C)5 D)6 E)12
A company of interest digitizes paper documents. The old software produced a mean of 5 errors per page. A random sample of 100 documents produced a sample mean of 4.730 errors per page. The standard deviation of errors per page is known to be 1. We want to know whether the new software changed the mean number of errors per page. 1. What is the null hypothesis and what is the alternative hypothesis? 2. What is the value of the...
A sample of 16 observations selected from a population produced a mean of 82 and a standard deviation of 14. Another sample of 18 observations selected from another population produced a mean of 75 and a standard deviation of 16. Assume that the two populations are normally distributed and the standard deviations of the two populations are equal. The alternative hypothesis is that the mean of the first population is greater than the mean of the second population. The significance...
Typing errors in a text are either nonword errors (as when "the" is typed as "teh") or word errors that result in a real but incorrect word. Spell‑checking software will catch nonword errors but not word errors. Human proofreaders catch 70% of word errors. You ask a fellow student to proofread an essay in which you have deliberately made 10 word errors. (a) If ? is the number of word errors missed, what is the distribution of ? ? Select...
given forecast errors of -5, -10 and +15 the mean absolute
deviation (MAD) is
5) _ 5) Given forecast errors of -5, -10, and +15, the Mean Absolute Deviation (MAD) is: B) 30. C) 175 D) 0. E) 225 A) 10.
A random sample of 105 observations produced a sample mean of 29. Find the critical and observed values of z for the following test of hypothesis using a 0.1. The population standard deviation is known to be 9 and the population distribution is normal. Ho: u 28 versus H 28 Round your answers to two decimal places Zcritical left Zcritical right=| Zobserved A random sample of 104 observations produced a sample mean of 29. Find the critical and observed values...