Dear Statalisters,
This is a very basic question and may be the answer is blindingly obvious!
I am running simple OLS regression with dummies for communes, to control for unobserved characteristics that may make some of my variables endogenous.
xi: reg riyielA2 primary counting ianulandsha2 anugood2 anubad2 i.fsize extenworker2 marketdis2 roadimpassmonth2 electmost2 i.comm92, rob
However, the F statistics is missing. There are 2832 observation and 120 communes.
Would someone have an idea as to why this is the case? I paste the output below.
Thanks a lot in advance,
I wish you all a very nice (and productive) summer.
Thi Minh
. xi: reg riyielA2 primary counting ianulandsha2 anugood2 anubad2 i.fsize extenworker2 marketdis2 roadimpa
> ssmonth2 electmost2 i.comm92 if north==0, rob
i.fsize _Ifsize_1-7 (naturally coded; _Ifsize_1 omitted)
i.comm92 _Icomm92a1-150 (naturally coded; _Icomm92a1 omitted)
Regression with robust standard errors Number of obs = 1060
F( 59, 999) = .
Prob > F = .
R-squared = 0.3650
Root MSE = 1.1907
------------------------------------------------------------------------------
| Robust
riyielA2 | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
primary2 | .238943 .0814221 2.93 0.003 .079165 .3987211
counting8 | .1574271 .0824014 1.91 0.056 -.0042727 .3191268
ianulandsha2 | -.1169965 .1206858 -0.97 0.333 -.3538232 .1198302
anugood2 | .517437 .1500027 3.45 0.001 .2230805 .8117935
anubad2 | -.2888542 .1266844 -2.28 0.023 -.5374523 -.0402562
_Ifsize_2 | .0892729 .1100055 0.81 0.417 -.1265954 .3051413
_Ifsize_3 | .0219927 .1371509 0.16 0.873 -.2471441 .2911295
_Ifsize_5 | .1902934 .1482042 1.28 0.199 -.1005338 .4811207
_Ifsize_6 | .1390849 .179857 0.77 0.440 -.2138559 .4920258
_Ifsize_7 | .1529401 .2521221 0.61 0.544 -.3418095 .6476897
extenworker2 | -1.281163 .2489915 -5.15 0.000 -1.769769 -.7925564
marketdis2 | -.0484737 .0278609 -1.74 0.082 -.1031463 .0061989
roadimpass~2 | -.0644231 .0211566 -3.05 0.002 -.1059395 -.0229066
electmost2 | -.8403821 .2567902 -3.27 0.001 -1.344292 -.3364721
_Icomm92a2 | (dropped)
_Icomm92a3 | (dropped)
_Icomm92a4 | (dropped)
_Icomm92a5 | (dropped)
_Icomm92a6 | (dropped)
_Icomm92a7 | (dropped)
_Icomm92a8 | (dropped)
_Icomm92a9 | (dropped)
_Icomm92a10 | (dropped)
_Icomm92a11 | (dropped)
_Icomm92a12 | (dropped)
_Icomm92a13 | (dropped)
_Icomm92a14 | (dropped)
_Icomm92a15 | (dropped)
_Icomm92a16 | (dropped)
_Icomm92a17 | (dropped)
_Icomm92a18 | (dropped)
_Icomm92a19 | (dropped)
_Icomm92a20 | (dropped)
_Icomm92a21 | (dropped)
_Icomm92a22 | (dropped)
_Icomm92a23 | (dropped)
_Icomm92a24 | (dropped)
_Icomm92a25 | (dropped)
_Icomm92a26 | (dropped)
_Icomm92a27 | (dropped)
_Icomm92a28 | (dropped)
_Icomm92a29 | (dropped)
_Icomm92a30 | (dropped)
_Icomm92a31 | (dropped)
_Icomm92a32 | (dropped)
_Icomm92a33 | (dropped)
_Icomm92a34 | (dropped)
_Icomm92a35 | (dropped)
_Icomm92a36 | (dropped)
_Icomm92a37 | (dropped)
_Icomm92a38 | (dropped)
_Icomm92a39 | (dropped)
_Icomm92a40 | (dropped)
_Icomm92a41 | (dropped)
_Icomm92a42 | (dropped)
_Icomm92a43 | (dropped)
_Icomm92a44 | (dropped)
_Icomm92a45 | (dropped)
_Icomm92a46 | (dropped)
_Icomm92a47 | (dropped)
_Icomm92a48 | (dropped)
_Icomm92a49 | (dropped)
_Icomm92a50 | (dropped)
_Icomm92a51 | (dropped)
_Icomm92a52 | (dropped)
_Icomm92a53 | (dropped)
_Icomm92a54 | (dropped)
_Icomm92a55 | (dropped)
_Icomm92a56 | (dropped)
_Icomm92a57 | (dropped)
_Icomm92a58 | (dropped)
_Icomm92a59 | (dropped)
_Icomm92a60 | (dropped)
_Icomm92a61 | (dropped)
_Icomm92a62 | (dropped)
_Icomm92a63 | (dropped)
_Icomm92a64 | (dropped)
_Icomm92a65 | (dropped)
_Icomm92a66 | (dropped)
_Icomm92a67 | (dropped)
_Icomm92a68 | (dropped)
_Icomm92a69 | (dropped)
_Icomm92a70 | -1.460631 .3615067 -4.04 0.000 -2.170031 -.7512314
_Icomm92a71 | -.484527 .3498048 -1.39 0.166 -1.170963 .2019093
_Icomm92a72 | -2.007965 .3601075 -5.58 0.000 -2.714619 -1.301312
_Icomm92a73 | -1.497574 .3387886 -4.42 0.000 -2.162393 -.8327549
_Icomm92a74 | -1.298576 .4921146 -2.64 0.008 -2.264273 -.3328793
_Icomm92a75 | -.6078374 .3354461 -1.81 0.070 -1.266097 .0504223
_Icomm92a76 | -1.328069 .297436 -4.47 0.000 -1.91174 -.7443978
_Icomm92a77 | -2.324027 .3811031 -6.10 0.000 -3.071882 -1.576173
_Icomm92a78 | .6342039 .3523299 1.80 0.072 -.0571876 1.325596
_Icomm92a79 | .122647 .3098287 0.40 0.692 -.4853426 .7306366
_Icomm92a80 | -1.826955 .502033 -3.64 0.000 -2.812115 -.8417947
_Icomm92a81 | 2.24553 .6112722 3.67 0.000 1.046006 3.445055
_Icomm92a82 | -.3124623 .32691 -0.96 0.339 -.9539714 .3290468
_Icomm92a83 | (dropped)
_Icomm92a84 | -3.001611 .3966383 -7.57 0.000 -3.779951 -2.223272
_Icomm92a85 | .6530298 .3644332 1.79 0.073 -.0621126 1.368172
_Icomm92a86 | .9237367 1.173775 0.79 0.431 -1.37961 3.227084
_Icomm92a87 | -2.307616 .3622094 -6.37 0.000 -3.018395 -1.596838
_Icomm92a88 | -2.315165 .4097308 -5.65 0.000 -3.119197 -1.511134
_Icomm92a89 | -.6401403 .5937521 -1.08 0.281 -1.805285 .525004
_Icomm92a90 | -1.120234 .216255 -5.18 0.000 -1.5446 -.6958677
_Icomm92a91 | 1.148787 .3368922 3.41 0.001 .4876894 1.809884
_Icomm92a92 | -2.681174 .3758231 -7.13 0.000 -3.418667 -1.943681
_Icomm92a93 | -1.213704 .2861376 -4.24 0.000 -1.775204 -.6522045
_Icomm92a94 | (dropped)
_Icomm92a95 | -.402001 .4638297 -0.87 0.386 -1.312193 .5081912
_Icomm92a96 | -1.396075 .3154201 -4.43 0.000 -2.015037 -.7771133
_Icomm92a97 | -1.831305 .5208524 -3.52 0.000 -2.853396 -.809215
_Icomm92a98 | -.8859774 .3371676 -2.63 0.009 -1.547615 -.2243394
_Icomm92a99 | .0226 .3492935 0.06 0.948 -.6628331 .708033
_Icomm92a100 | -1.727526 .3907112 -4.42 0.000 -2.494235 -.9608175
_Icomm92a101 | -2.867931 .4041884 -7.10 0.000 -3.661086 -2.074775
_Icomm92a102 | 1.014971 .1786803 5.68 0.000 .6643393 1.365603
_Icomm92a103 | -.9122642 .3705058 -2.46 0.014 -1.639323 -.1852055
_Icomm92a104 | -.6095209 .3285144 -1.86 0.064 -1.254178 .0351366
_Icomm92a105 | (dropped)
_Icomm92a106 | -1.981655 .916783 -2.16 0.031 -3.780696 -.1826133
_Icomm92a107 | -.8182702 .4652834 -1.76 0.079 -1.731315 .0947746
_Icomm92a108 | .2701954 .2620661 1.03 0.303 -.2440678 .7844586
_Icomm92a109 | (dropped)
_Icomm92a110 | -2.315845 .368142 -6.29 0.000 -3.038265 -1.593424
_Icomm92a111 | -1.08883 .4851615 -2.24 0.025 -2.040883 -.1367774
_Icomm92a112 | -.4807054 .2603527 -1.85 0.065 -.9916062 .0301954
_Icomm92a113 | .2966488 .2331108 1.27 0.203 -.1607941 .7540918
_Icomm92a114 | -.668567 .3286473 -2.03 0.042 -1.313485 -.0236489
_Icomm92a115 | -1.695834 .3529889 -4.80 0.000 -2.388518 -1.003149
_Icomm92a116 | .0644237 .2550064 0.25 0.801 -.435986 .5648333
_Icomm92a117 | -1.23573 .2507658 -4.93 0.000 -1.727818 -.7436422
_Icomm92a118 | (dropped)
_Icomm92a119 | -.9733886 .4326162 -2.25 0.025 -1.822329 -.1244478
_Icomm92a120 | -2.048157 .271183 -7.55 0.000 -2.580311 -1.516004
_Icomm92a121 | (dropped)
_Icomm92a122 | (dropped)
_Icomm92a123 | (dropped)
_Icomm92a124 | (dropped)
_Icomm92a125 | (dropped)
_Icomm92a126 | (dropped)
_Icomm92a127 | (dropped)
_Icomm92a128 | (dropped)
_Icomm92a129 | (dropped)
_Icomm92a130 | (dropped)
_Icomm92a131 | (dropped)
_Icomm92a132 | (dropped)
_Icomm92a133 | (dropped)
_Icomm92a134 | (dropped)
_Icomm92a135 | (dropped)
_Icomm92a136 | (dropped)
_Icomm92a137 | (dropped)
_Icomm92a138 | (dropped)
_Icomm92a139 | (dropped)
_Icomm92a140 | (dropped)
_Icomm92a141 | (dropped)
_Icomm92a142 | (dropped)
_Icomm92a143 | (dropped)
_Icomm92a144 | (dropped)
_Icomm92a145 | (dropped)
_Icomm92a146 | (dropped)
_Icomm92a147 | (dropped)
_Icomm92a148 | (dropped)
_Icomm92a149 | (dropped)
_Icomm92a150 | (dropped)
_cons | 5.834788 .5632886 10.36 0.000 4.729423 6.940152
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