190 likes | 318 Views
Coding and Descriptive Statistics. The Eight Queens Problem
E N D
The Eight Queens Problem You must find a solution that places eight queens on the chessboard below so that no queen can capture any other queen. If you are a chess player, you already know that a queen can move in a straight line any number of spaces horizontally, vertically, or diagonally. Good luck.
Descriptives Correlations and Descriptives • /comment *There were 7,476,814 units shipped in 1991 comprising 1703 models* • -> CORRELATIONS • -> /VARIABLES=nomresid firmage inddmdch inddemd znichdis zxnchdst nichesw • -> znclock nclock pctahead pctbehnd aclock nichsize sqniche xnchsize nmunifch • -> stblriv
Descriptives • -> /PRINT=TWOTAIL SIG • -> /STATISTICS DESCRIPTIVES • -> /MISSING=PAIRWISE .
Descriptives • Variable Cases Mean Std Dev • NOMRESID 2154 .0031 .0188 • FIRMAGE 2132 3.1796 3.3656 • INDDMDCH 2075 .2195 .2703 • INDDEMD 2132 13917212.3520 4904283.5921 • ZNICHDIS 2132 .0000 .9979 • ZXNCHDST 2132 .0000 .9979
Descriptives • NICHESW 2132 .3973 .4894 • ZNCLOCK 1599 .0000 .9915 • NCLOCK 2132 1.6313 1.0560 • PCTAHEAD 2132 .0283 .0793 • PCTBEHND 2132 .7702 .3853 • ACLOCK 2132 1.5929 1.1842 • NICHSIZE 2132 73.7533 34.7859 • SQNICHE 2132 6649.0394 5549.3028 • XNCHSIZE 2132 165.1764 72.5831 • NMUNIFCH 1599 1.9774 2.1503 • STBLRIV 2132 .3555 .2558
Descriptives • - - Correlation Coefficients - - • NOMRESID FIRMAGE INDDMDCH INDDEMD ZNICHDIS ZXNCHDST • XNCHSIZE -.0785 .0753 -.6214 .7867 -.0626 .2423 • ( 2131) ( 2132) ( 2052) ( 2132) ( 2132) ( 2132) • P= .000 P= .001 P= .000 P= .000 P= .004 P= .000 • NMUNIFCH .0214 .0177 .0700 .0875 .0216 .0312 • ( 1598) ( 1599) ( 1599) ( 1599) ( 1599) ( 1599) • P= .393 P= .479 P= .005 P= .000 P= .388 P= .213 • STBLRIV -.0426 -.0829 .3072 -.2503 -.1156 -.1853 • ( 2131) ( 2132) ( 2052) ( 2132) ( 2132) ( 2132) • P= .049 P= .000 P= .000 P= .000 P= .000 P= .000 • (Coefficient / (Cases) / 2-tailed Significance) • " . " is printed if a coefficient cannot be computed
ALTPROC alternate processor designation 1987 • Valid Cum • Value Label Value Frequency Percent Percent Percent • 3 .2 .2 .2 • 11/23 1 .1 .1 .3 • 2901 1 .1 .1 .4 • 29116 1 .1 .1 .5 • 32016 1 .1 .1 .5 • 6089 1 .1 .1 .6 • 6120 2 .2 .2 .8 • 6301 1 .1 .1 .9 • 6502 20 1.6 1.6 2.4 • 6504 1 .1 .1 2.5 • 6510 2 .2 .2 2.7 • 65C816 1 .1 .1 2.7 • 6602 1 .1 .1 2.8 • 6800 6 .5 .5 3.3 • 68000 43 3.4 3.4 6.6 • 68008 1 .1 .1 6.7
Valid Cum • Value Label Value Frequency Percent Percent Percent • 68009 2 .2 .2 6.9 • 68010 15 1.2 1.2 8.0 • 6802 1 .1 .1 8.1 • 68020 10 .8 .8 8.9 • 6805 3 .2 .2 9.1 • 6809 5 .4 .4 9.5 • 6810 1 .1 .1 9.6 • 780B 1 .1 .1 9.7 • 80186 30 2.3 2.3 12.0 • 80286 331 25.8 25.8 37.8 • 80386 142 11.1 11.1 48.9 • 80386SX 4 .3 .3 49.2 • 80486 2 .2 .2 49.4 • 8085 23 1.8 1.8 51.2 • 8085A 2 .2 .2 51.3 • 8086 81 6.3 6.3 57.6 • 8087 3 .2 .2 57.9
Descriptives • 8088 296 23.1 23.1 81.0 • 8088A 2 .2 .2 81.1 • 86000 1 .1 .1 81.2 • 8X305 1 .1 .1 81.3 • 9445 4 .3 .3 81.6 • 9900 1 .1 .1 81.7 • ACS-09 1 .1 .1 81.7 • APPLE 1 .1 .1 81.8 • CHI 1 .1 .1 81.9 • GOULD 2 .2 .2 82.1 • LISP 2 .2 .2 82.2 • LSI11 2 .2 .2 82.4 • NA 1 .1 .1 82.4 • PANDA 1 .1 .1 82.5 • PRO 28 2.2 2.2 84.7 • T11 2 .2 .2 84.9 • V20 12 .9 .9 85.8 • V30 6 .5 .5 86.3 • V40 4 .3 .3 86.6 • Z80 110 8.6 8.6 95.2 • Z80A 51 4.0 4.0 99.1 • Z80B 11 .9 .9 100.0 • ------- ------- ------- • Total 1282 100.0 100.0 • Valid cases 1282 Missing cases 0
8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 15 19 20 Number of years that a firm shipped PCs 1969 - 1991 Mean # of PC Models by Lifespan Source: IDC