Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Question: Forecasters at Siegfried Corporation are using simple exponential smoothing to forecast the sales of its major product. They are trying to decide what smoothing constant will give the best results. They have tried a number of smoothing constants with the following results:
Smoothing Constant RMSE
0.10 125
0.15 97
0.20 136
0.25 141
Which smoothing constant appears best from these results? Why? Could you perhaps get even better results given these outcomes? How would you go about improving the RMSE?
Calculate the mean attitude score toward the Springdale Mall shopping area and compute the sample standard deviation. Does this area seem to be well regarded by the respondents?
Compare the mean absolute error, root mean square error, and the mean absolute percent of error for all four of these forecasting techniques - what do these statistics tell you about the forecasts? Which one is the best forecast and why?
Find the probability that 5 randomly selected high school students will say that they exercise regularly. Express your answer for this item in percent.
A psychologist wants to estimate the standard deviation of IQ scores. It is widely believed that IQ scores follow a normal distribution. Her random sample of 28 IQ scores has a mean of 101 and a standard deviation of 14.7. Find the 95% confidence..
Write appropriate null hypotheses.- Find the expected counts for each cell, and explain why the chi-square procedures are not appropriate for this table.
Is the dealer's mean significantly greater than the national average of 30,000 miles for 2-year leased vehicles, using the 10 percent level of significance?
The following data are the daily price quotations for a certain stock over a period of 45 days. Construct a stem-and-leaf display for these data. What can you conclude about the distribution of daily stock prices over the period under study?
Compute lower and upper quartiles of log10-balances? Determine 95% range of the balances in $s? Express in English what the two boundaries mean.
Shown below are the per diem business travel expenses listed by Runzheimer International for 11 selected cities around the world.
a sports league is making up their season schedule. the league has 12 teams with eight teams from la and the rest from
Suppose you are assisting the county assessor (whose job is to assess the value of properties for property tax purposes) in determining a model where the price of a single-family residential property in a given neighborhood can be predicted based on ..
Use the Emperical Rule to find what two values 68% of the data will fall between for a data set with a mean of 219 and standard deviation of 20.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd