An agronomist wanted to investigate the factors that determine crop yield. Accordingly, she undertook an experiment...

An agronomist wanted to investigate the factors that determine crop yield. Accordingly, she undertook an experiment wherein a farm was divided into 30 one-acre plots. The amount of fertilizer applied to each plot was varied. Corn was then planted, and the amount of corn harvested at the end of the season was recorded. The collected data is given below:

Yield	Fertilizer	Yield	Fertilizer
223	100	220	100
321	200	385	200
158	300	247	300
187	400	390	400
331	500	303	500
255	100	345	100
362	200	268	200
216	300	380	300
301	400	415	400
342	500	353	500
353	100	366	100
328	200	376	200
252	300	323	300
346	400	421	400
343	500	448	500

Plot the scatter plot and discuss if the agronomist has reasons to conclude that there is a linear relationship between the amount of fertilizer and the crop yield.
Find the sample regression line using the least square method and interpret the coefficients within the case of the agronomist.

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orchestra answered 1 year ago

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