Question

10 pairs of observations number of concurrent deviation was found to be 4 what is the value of the coefficient of concurrent deviation​

Answer 1

So here = 10−1 = 9 and c = 4 so R =± ∣∣2×4−99∣∣−−−−−−√=±19−−√=±13but since 2×4−9<0 so take negative value =−13

Answer 2

Answer:

R = $\frac{-1}{3}$

Step-by-step explanation:

The Formula for Coefficient of Concurrent deviation is:

$R=\pm\sqrt{|\frac{2c-m}{m} }|$

here, m = n - 1 (and n is the total number of observation) = 10 - 1 = 9

c = Number of pair of concurrent deviation = 4

Substituting all values in formula,

$R=\pm\sqrt{|\frac{2\times 4-9}{9} }|$

Also, 2×4−9 < 0 so take negative value

⇒ R = $\frac{-1}{3}$