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b) The following table shows the number of people who are infected with Disease Z at District B in the year 2018 to the year

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b) The following table shows the number of people who are infected with Disease Z at District B in the year 2018 to the year 2021. Year Number of people infected Q1 Q2 Q3 Q4 2018 88 2019 150 108 398 254 2020 494 568 794 544 2021 421 498 (i) Compute the moving average trend. (ii) Calculate the average seasonal variations using the multiplicative model. (mii) Forecast the number of people infected in Quarter 4 of year 2021

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