exam Maths Puzzle Numerical Ability

Below are average gestation days and longevity data for 22 animals. (a) Make a scatter plot.
(b) Find the correlation coefficient and interpret it. (c) Test the correlation coeffi

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3y+2x=12 is the paired solution (4,2) A line L through the origin in R^3 can be represented by parametrix equations of the form x = at, y = bt, z = ct. Use these equations to show that L is a subspace of R^3; that is