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This week you will use an excel spreadsheet to analyze forecasting performance. Your company produces and distributes two lines of Consumer External Hard Drives: 1 Terabyte drives (1 Tb) and 5 Terabyte Drives (5 Tb). The unit sales levels and forecasts for the last two previous years are in the table below. For this exercise, You have been asked to calculate the Forecast error, Forecast Percentage, Mean percentage Error (MPE) and Mean Absolute Percentage Error (MAPE) for (a) each type of terabyt...
This week you will use an excel spreadsheet to analyze forecasting performance. Your company produces and distributes two lines of Consumer External Hard Drives: 1 Terabyte drives (1 Tb) and 5 Terabyte Drives (5 Tb). The unit sales levels and forecasts for the last two previous years are in the table below. For this exercise, You have been asked to calculate the Forecast error, Forecast Percentage, Mean percentage Error (MPE) and Mean Absolute Percentage Error (MAPE) for (a) each type of terabyt...
SCIN 202 Quiz 3 Part 1 of 1  30.0 Points Question 1 of 10 3.0 Points This is a characteristic of all organisms except viruses? • A. The presence of a plasma membrane • B. Capable of reproduction inside a host • C. The ability to mutate • D. Thrive in productive environmental conditions Comment:Correct Question 2 of 10 3.0 Points The is a true statement regarding helminths. • A. they are all hermaphroditic • B. can all be considered as cellular obligate parasites • C. they can be c...
MATH 302 Final Exam Part 1 of 16  1. A cCompany operates four machines during three shifts each day. From production records, the data in the table below were collected. At the .05 level of significance test to determine if the number of breakdowns is independent of the shift. 2. The chisquare goodnessoffit test can be used to test for: Part 2 of 16  3. In a simple linear regression analysis, the following sum of squares are produced: 4. ____________ is/are especially helpful in...
MATH 302 Final Exam Part 1 of 16  1. The data presented in the table below resulted from an experiment in which seeds of 5 different types were planted and the number of seeds that germinated within 5 weeks after planting was recorded for each seed type. At the .01 level of significance, is the proportion of seeds that germinate dependent on the seed type? 2. The chisquare goodnessoffit test can be used to test for: 3. In choosing the “bestfitting” line through a set of points in ...
Math 302 quiz 1 1. What is the term for a characteristic or attribute that can assume different values? 2. A pareto chart does NOT have which of the following properties? 3. Suppose that a histogram of a data set is approximately symmetric and "bell shaped". Approximately what percent of the observations are within two standard deviations of the mean? 4. Suppose that a histogram of a data set is approximately symmetric and "bell shaped". Approximately, what percent of the observations ar...
MATH 302 Quiz 1 Part 1 of 3 1. A histogram that is positively skewed is also called 2. Researchers may gain insight into the characteristics of a population by examining a 3. A variable is classified as ordinal if: 4. A sample of 20 observations has a standard deviation of 4. The sum of the squared deviations from the sample mean is: 5. A pareto chart does NOT have which of the following properties? 6. What type of graph is the figure below? 7. Numerical variables can be subdivided i...
MATH 302 Midterm Exam 2
MATH 302 Midterm Exam Part 1 of 9  1. Given the following boxplot where m is the median value, what statement could be made about the distribution of the data? Part 2 of 9  2. The table below shows the preferences for elective courses of students who are undecided about their majors. 3. The formal way to revise probabilities based on new information is to use: Part 3 of 9  4. Find the variance of the following probability distribution. 5. The following data were obtained fro...
MATH 302 Quiz 1 Part 1 of 3  1. What type of sampling is being employed if the population is divided into economic classes and a sample is chosen from each economic class to be surveyed? 2. Which of the following statistics is not a measure of central location? 3. Gender and State are examples of which type of data? 4. The amount of time needed to run the Boston marathon is an example of which type of variable? 5. The mode is best described as the 6. Given the following boxplot where m ...