The following data relates to the gross value of output of a factory over the last few years: Year 2014 2015 2016 2017 2018 2019 2020 Production (in ‘000 tons) 60 72.5 85.6 106.8 125.5 145.4 156.2 Fit a straight-line trend using the method of least squares. Calculate the parabolic trend  equation to predict the average annual output. Predict the trend values using each of the  model and comment on its suitability

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Q3 The following data relates to the gross value of output of a factory over the last few years:
Year 2014 2015 2016 2017 2018 2019 2020
Production
(in ‘000 tons)
60 72.5 85.6 106.8 125.5 145.4 156.2
Fit a straight-line trend using the method of least squares. Calculate the parabolic trend 
equation to predict the average annual output. Predict the trend values using each of the 
model and comment on its suitability

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