exam Maths Puzzle Numerical Ability

Find the value for the correlation coefficient r

x 5, 1, 4, 2, 3
-------------------------
y 5, 10, 12, 4, 8

Can anyone help?

Read Solution (Total 0)

exam Other Question

i need a step by step example of a linear programming problem! please send me one. ex)

3x-y<7
2x-y>3
y>x-3

f(x,y)=x-4y A chemist wants to mix a 60% saline solution with 20 liters of a 45% saline solution to obtain a 55% saline solution. How much of the 60% solution should she use?