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Geomatics Engineering Question on Distance and angle measurement

In the figure, d1,d2,d3 d_1, d_2, d_3 are three independently measured distances for estimating the unknown distances x and y. The correlation coefficient between the unknown estimates approximately equals to
d1, d2, d3 are three independently measured distances for estimating the unknown distances x and y.

A

0.325

B

-0.496

C

0.755

D

-0.592

Answer

-0.496

Explanation

Solution

The correct answer is (B) : - 0.496