The following data is on yield maize (Kg/ha) in soils with different Ph
pH 6.5 10.4 7.1 9.2 5.0 4.2 5.6 8
Yield 140 96 125 80 72 65 125 65
i. Carry out a correlation analysis and test the significance of r.
ii. Why does the correlation coefficient range between -1 and + 1?
iii. Distinguish between correlation and regression analysis?
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