Consider the following time series data:Month 1 2 3 4 5 6 7Value25 13 19 11 19 23 16(a) Compute MSE using the most recent value as the forecast for the nextperiod.If required, round your answer to one decimal place.(b) Compute MSE using the average of all the data available as the forecastfor the next period.If required, round your answer to one decimal place. Do not roundintermediate calculation.What is the forecast for month 8?If required, round your answer to one decimal place.

Formula for mean square error of the data set is given by MSE=∑Absolute error2N-1 Here,…

Answered: Consider the following time series…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Consider the following time series data. Week 1 2 3 4 5 6 Value 19 14 17 12 18 14 Using the naive method (most recent value) as the forecast for the next week, compute the following measures of forecast accuracy. Round the intermediate calculations to two decimal places. Mean absolute error (to 1 decimal). Mean squared error (to 1 decimal). Mean absolute percentage error (to 2 decimals). % What is the forecast for week 7 (to the nearest whole number)?
section 5.4 Step 1 of 2 : Calculate the population mean for the shelf-life. Round your answer to two decimal places, if necessary. Step 2 of 2 : Calculate the population standard deviation for the shelf-life. Round your answer to two decimal places, if necessary.
QUESTION 17 Craig interviewed several waiters and waitresses and asked them to estimate their annual income from waiting tables. He recorded the values in the Five Number Summary below, and found one outlier of $14,500. The next smallest value in the dataset was $18,000. Min: $14,500 Q1: $18,900 Med: $20,300 Q3: $21,700 Max: $25,100 Make a boxplot for these values by hand and attach your work as a pdf, jpg, or png. A suggested way to set up your graphing space is as follows: $28,000 $27,000 $26,000 $25,000 $24,000 $23,000 $22,000 $21,000 $20,000 $19,000 $18,000 $17,000 $16,000 $15,000 $14,000
Following shows the numbers of Amazon Prime members in the millions, each quarter from 2016 to 2021. Quarter 2016 2017 2018 2019 2020 2021 1 26 36 48 62 81 98 2 27 37 50 65 83 103 3 29 40 53 69 86 109 4 33 44 57 74 93 117 Construct a line chart using the data. Describe the relationship between the time and number of subscribers.
The data for this problem are the air freight shipments (in ton-miles) each month (beginning in January for one year) in the U. S. for 10 years. The following is a time series plot of this data. What are the most important features of this plot? Ton-miles 3000- 2500- 2000- 1500- 1000- 1 Time Series Plot of Ton-miles ܚ ܪܘܐܐܐ ܘ ܚܐ ܀ 12 24 36 48 60 Index 72 84 96 108 120
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Which of the following is the most appropriate type of chart for determining the number of observations at or below a specific value? Select one: a. A histogram. b. A pie chart. c. A time-series chart. d. A cumulative frequency ogive.
QUESTION 4 The Stem-and-Leaf Plot below displays the total number of world shark attacks from 1990 to 2006. Stem 3 345 672 622103 Leaf 66 2499 167 112358 09 12 Calculate the median. O O a.57 Ob.62c.59 Od. 49.
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