We have measured the angular and spatial clustering of 671 K < 18.40 , R - K > 5 Extremely Red Objects ( EROs ) from a 0.98 ~ { } { deg } ^ { 2 } sub-region of the NOAO Deep Wide-Field Survey ( NDWFS ) .
Our study covers nearly 5 times the area and has twice the sample size of any previous ERO clustering study .
The wide field of view and B _ { W } RIK passbands of the NDWFS allow us to place improved constraints on the clustering of z \sim 1 EROs .
We find the angular clustering of EROs is slightly weaker than in previous measurements , and \omega ( 1 ^ { \prime } ) = 0.25 \pm 0.05 for K < 18.40 EROs .
We find no significant correlation of ERO spatial clustering with redshift , apparent color or absolute magnitude , although given the uncertainties , such correlations remain plausible .
We find the spatial clustering of K < 18.40 , R - K > 5 EROs is well approximated by a power-law , with r _ { 0 } = 9.7 \pm 1.1 ~ { } h ^ { -1 } { Mpc } in comoving coordinates .
This is comparable to the clustering of \sim 4 L ^ { * } early-type galaxies at z < 1 , and is consistent with the brightest EROs being the progenitors of the most massive ellipticals .
There is evidence of the angular clustering of EROs decreasing with increasing apparent magnitude , when NDWFS measurements of ERO clustering are combined with those from the literature .
Unless the redshift distribution of K \gtrsim 20 EROs is very broad , the spatial clustering of EROs decreases from r _ { 0 } = 9.7 \pm 1.1 ~ { } h ^ { -1 } { Mpc } for K < 18.40 to r _ { 0 } \sim 7.5 ~ { } h ^ { -1 } { Mpc } for K \gtrsim 20 EROs .