Degrees of Freedom 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 LEVEL OF SIGNIFICANCE .10 2 706 4.605 6251 7,779 9.236 10.645 12.017 13.362 14.684 15.987 17.275 18.549 19.812 21.064 22.307 23.542 24.769 25.989 27.204 28.412 29.615 30.813 32.007 33.196 34.382 .05 3.841 5.991 7.815 9.488 11.070 12.592 14.067 15.507 16.919 18307 19.675 21.026 22.362 23.685 24_996 26.296 27.587 28.869 30.144 31_410 32.671 33_924 35.172 36.415 37.652 .01 6.635 9.210 11.345 13.277 15.086 16.812 18.475 20.090 21.666 23.209 24.725 26_217 27.688 29.141 30_578 32.000 33.409 34.805 36.191 37 _ 566 38.932 40.289 41.638 42.980 44.314