Stats Homework Exam Questions and Answers Solved 100%

Stats Homework Exam Questions and Answers Solved 100% 22.5 - Answers Exhibit 17-2 Consider the following time series. t 1 2 3 4 Yi 4 7 9 10 Refer to Exhibit 17-2. The forecast for period 10 is irregular - Answers The time series component that reflects variability due to natural disasters is called 58.9 - Answers Given an actual demand of 61, forecast of 58, and an of .3, what would the forecast for the next period be using simple exponential smoothing? a time series - Answers A group of observations measured at successive time intervals is known as 41 - Answers For the following time series, you are given the moving average forecast. The mean squared error equals the mean square error - Answers One measure of the accuracy of a forecasting model is -6.7 - Answers Exhibit 17-3 Consider the following time series. Refer to Exhibit 17-3. The forecast for period 10 is .64 - Answers Exhibit 17-1 Below you are given the first five values of a quarterly time series. The multiplicative model is appropriate and a four-quarter moving average will be used. Refer to Exhibit 17-1. An estimate of the seasonal-irregular component for Quarter 3 of Year 1 is a cyclical component - Answers A component of the time series model that results in the multi-period above-trend and below-trend behavior of a time series is 197.6 - Answers The following linear trend expression was estimated using a time series with 17 time periods. Tt = 129.2 + 3.8t The trend projection for time period 18 is 19.2 - Answers Below you are given the first two values of a time series. You are also given the first two values of the exponential smoothing forecast. If the smoothing constant equals .3, then the exponential smoothing forecast for time period three is 2.5 - Answers Exhibit 17-2 Consider the following time series. t 1 2 3 4 Yi 4 7 9 10 Refer to Exhibit 17-2. The intercept, b0, is 90 - Answers Exhibit 12-2 Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification. Freshmen 83 Sophomores 68 Juniors 85 Seniors 64 We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year. Refer to Exhibit 12-2. The expected number of freshmen is less than 0.005 - Answers Exhibit 12-5 The table below gives beverage preferences for random samples of teens and adults. We are asked to test for independence between age (i.e., adult and teen) and drink preferences.