One frequently encountered problem in crop production is, Ask an Expert

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One frequently encountered problem in crop production is deciding when to harvest maximize yield. The accompanying data on x=time to harvesting (number of days after flowering) and y=yield of paddy.

x: 16,18,29,22,24,26,28,30,32,34,36,38,40,42,44,46

y:2508,2518,3304,3423,3057,3190,3500,3883,3823,3646,3708,3333,3517,3241,3103,2776

a) Is it possible to transform this data so that there is an approximate linear relationship between the transformed variable?why or why not?

b) Use a statistical computer package to fit a quadratic function to this data, and then predict yield when time to harvesting is 25 days, Assess the fit of quadratic to the data

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