options crt; out cole; doc DEVICE 'Computer Model Number'; doc FCS 'Year of First Customer Shipment'; doc CAP 'Capacity, in Megabtyes'; doc ACT 'Number of Actuators (read/write heads) on the Device'; doc ACCT 'Average Access Time in Milliseconds'; doc ROTD 'Average Rotation Delay in Milliseconds'; doc TR 'Transfer Rate in Kilobytes per Second'; doc ARDEN 'Areal Density in Kilobits per Squared Inch'; doc PRICE 'Price in Nominal Dollars'; doc SPEED 'ACT/(ACCT + ROTD + (2000/TR))'; doc OLDTR 'Original TR (with errors)'; doc OLDARD 'Original ARDEN (with errors)'; doc OLDPR 'Original PRICE (with errors)'; doc OLDSP 'Original SPEED (with errors)'; doc D72 '1972 dummy'; doc D73 '1973 dummy'; doc D74 '1974 dummy'; doc D75 '1975 dummy'; doc D76 '1976 dummy'; doc D77 '1977 dummy'; doc D78 '1978 dummy'; doc D79 '1979 dummy'; doc D80 '1980 dummy'; doc D81 '1981 dummy'; doc D82 '1982 dummy'; doc D83 '1983 dummy'; doc D84 '1984 dummy'; ?Source: David Cartwright, US Dept. of Commerce, ? Bureau of Economic Analysis ?Note: The original data used by Cole et al. in the regression results ?reported in Chapter 4 contained several data errors. These errors have ?been corrected in the above data series. However, in order to replicate ?the reported Cole results, the original data (with errors included) need ?to be used. These variables are named OLDTR, OLDARD, OLDPR and OLDSP. load; end; noprint; load DEVICE YEAR FCS CAP ACT ACCT ROTD TR ARDEN PRICE SPEED; 6380.0 1984 84 2520.0 4 15 8.30 3000 12192.0 48700 .16690 314.0 1972 71 29.2 1 32 12.50 312 220.0 11000 .01964 330.0 1973 73 100.0 1 28 8.33 806 775.7 22000 .02577 330.0 1974 73 100.0 1 28 8.33 806 775.7 12500 .02577 330.0 1975 73 100.0 1 28 8.33 806 775.7 12500 .02577 330.0 1976 73 100.0 1 28 8.33 806 775.7 12500 .02577 1035.1 1975 75 200.0 2 30 8.33 806 775.6 38500 .04901 1035.1 1976 75 200.0 2 30 8.33 806 775.6 27500 .04901 1214.0 1972 70 29.0 1 35 12.50 312 220.0 9000 .01855 23141.0 1972 71 29.2 1 35 12.50 312 220.0 13000 .01855 33301.0 1973 73 100.0 1 30 8.33 806 775.7 22000 .02450 33301.0 1974 73 100.0 1 30 8.33 806 775.7 12000 .02450 33301.0 1975 73 100.0 1 30 8.33 806 775.7 12000 .02450 33301.0 1976 73 100.0 1 30 8.33 806 775.7 11000 .02450 33750.0 1983 83 1639.0 4 16 8.40 3000 12939.2 60650 .15957 33801.0 1977 77 800.0 2 18 8.40 1198 4191.0 37750 .07125 33801.0 1978 77 800.0 2 18 8.40 1198 4191.0 37750 .07125 33801.0 1979 77 800.0 2 18 8.40 1198 4191.0 37750 .07125 33801.0 1980 77 800.0 2 18 8.40 1198 4191.0 30200 .07125 33801.0 1981 77 800.0 2 18 8.40 1198 4191.0 30200 .07125 33801.0 1982 77 800.0 2 18 8.40 1198 4191.0 36610 .07125 33800.0 1983 83 2520.0 4 16 8.40 3000 12939.2 68200 .15957 2319.2 1972 70 87.0 3 60 13.00 312 220.0 38250 .03778 3330.0 1972 71 200.0 2 30 8.40 806 775.7 51940 .04892 3330.0 1973 71 200.0 2 30 8.40 806 775.7 52033 .04892 3330.0 1974 71 200.0 2 30 8.40 806 775.7 52900 .04892 3340.2 1974 73 140.0 2 25 10.10 885 1691.0 28000 .05353 3340.2 1975 73 140.0 2 25 10.10 885 1691.0 26600 .05353 3340.2 1976 73 140.0 2 25 10.10 885 1691.0 25200 .05353 3340.2 1977 73 140.0 2 25 10.10 885 1691.0 25200 .05353 3344.2 1976 76 559.0 2 25 10.10 885 2694.0 49500 .05353 3344.2 1977 76 559.0 2 25 10.10 885 2694.0 49500 .05353 3344.2 1978 76 559.0 2 25 10.10 885 2694.0 47531 .05353 3344.2 1979 76 559.0 2 25 10.10 885 2694.0 34320 .05353 3344.2 1980 76 559.0 2 25 10.10 885 2694.0 31680 .05353 3344.2 1981 76 559.0 2 25 10.10 885 2694.0 31741 .05353 3350.2 1976 76 635.0 2 25 8.30 1198 3071.0 49500 .05719 3350.2 1977 76 635.0 2 25 8.30 1198 3071.0 49500 .05719 3350.2 1978 76 635.0 2 25 8.30 1198 3071.0 47530 .05719 3350.2 1979 76 635.0 2 25 8.30 1198 3071.0 34320 .05719 3350.2 1980 76 635.0 2 25 8.30 1198 3071.0 31680 .05719 3350.2 1981 76 635.0 2 25 8.30 1198 3071.0 31741 .05719 3350.2 1982 76 635.0 2 25 8.30 1198 3071.0 32940 .05719 3370.1 1980 80 571.3 2 20 10.10 1859 7705.0 25204 .06415 3370.1 1981 80 571.3 2 20 10.10 1859 7705.0 27818 .06415 3370.1 1982 80 571.3 2 20 10.10 1859 7705.0 28963 .06415 3370.1 1983 80 571.3 2 20 10.10 1859 7705.0 26600 .06415 3370.1 1984 80 571.3 2 20 10.10 1859 7705.0 26600 .06415 3375.2 1981 81 819.7 2 19 10.10 1859 9707.0 31859 .06628 3375.2 1982 81 819.7 2 19 10.10 1859 9707.0 32839 .06628 3375.2 1983 81 819.7 2 19 10.10 1859 9707.0 28770 .06628 3375.2 1984 81 819.7 2 19 10.10 1859 9707.0 28770 .06628 3380 1981 81 2520.0 4 16 8.30 3000 12192.0 81157 .16021 3380 1982 81 2520.0 4 16 8.30 3000 12192.0 83662 .16021 3380 1983 81 2520.0 4 16 8.30 3000 12192.0 71600 .16021 3380 1984 81 2520.0 4 16 8.30 3000 12192.0 69136 .16021 7330 1972 72 100.0 1 27 8.33 806 775.7 21060 .02645 7330 1973 72 100.0 1 27 8.33 806 775.7 31060 .02645 7330 1974 72 100.0 1 27 8.33 806 775.7 31060 .02645 7330 1975 72 100.0 1 27 8.33 806 775.7 22480 .02645 7330 1976 72 100.0 1 27 8.33 806 775.7 22480 .02645 7330 1977 72 100.0 1 27 8.33 806 775.7 22480 .02645 3640 1976 76 140.0 2 20 10.10 885 1690.8 20200 .06180 3640 1977 76 140.0 2 20 10.10 885 1690.8 20200 .06180 3644 1978 78 560.0 2 25 10.10 885 2705.3 42075 .05353 3644 1979 78 560.0 2 25 10.10 885 2705.3 38600 .05353 3644 1980 78 560.0 2 25 10.10 885 2705.3 31680 .05353 3644 1981 78 560.0 2 25 10.10 885 2705.3 31680 .05353 3660 1972 69 29.2 1 50 12.50 312 220.0 15000 .01451 3670 1972 72 200.0 2 27 8.33 806 775.7 51940 .05289 3670 1973 72 200.0 2 27 8.33 806 775.7 51940 .05289 3670 1974 72 200.0 2 27 8.33 806 775.7 38000 .05289 3670 1975 72 200.0 2 27 8.33 806 775.7 39500 .05289 3670 1976 72 200.0 2 27 8.33 806 775.7 39500 .05289 3670 1977 72 200.0 2 27 8.33 806 775.7 36250 .05289 2800 1972 70 29.2 1 30 12.50 312 220.0 9000 .02045 3335 1972 72 100.0 1 27 8.35 806 775.7 25920 .02643 3335 1973 72 100.0 1 27 8.35 806 775.7 19350 .02643 3335 1974 72 100.0 1 27 8.35 806 775.7 22680 .02643 8100 1975 75 100.0 1 28 8.30 806 775.7 22770 .02579 8100 1976 75 100.0 1 28 8.30 806 775.7 22770 .02579 8100 1977 75 100.0 1 28 8.30 806 775.7 22770 .02579 8350 1977 77 635.0 2 25 8.33 1198 3084.0 48150 .05714 8350 1978 77 635.0 2 25 8.33 1198 3084.0 48150 .05714 8350 1979 77 635.0 2 25 8.33 1198 3084.0 38000 .05714 8350 1980 77 635.0 2 25 8.33 1198 3084.0 31000 .05714 8350 1981 77 635.0 2 25 8.33 1198 3084.0 31000 .05714 8350 1982 77 635.0 2 25 8.33 1198 3084.0 32240 .05714 8380 1983 83 2520.0 4 16 8.33 3000 12192.0 84590 .16002 8380 1984 83 2520.0 4 16 8.33 3000 12192.0 84590 .16002 5314 1972 70 29.9 1 32 12.50 312 220.0 11370 .01964 ; load OLDTR OLDARD OLDPR OLDSP D72 D73 D74 D75 D76 D77 D78 D79 D80 D81 D82 D83 D84; 3000 12292.0 48700 .16690 0 0 0 0 0 0 0 0 0 0 0 0 1 312 220.0 11000 .01964 1 0 0 0 0 0 0 0 0 0 0 0 0 806 775.7 22000 .02577 0 1 0 0 0 0 0 0 0 0 0 0 0 806 775.7 12500 .02577 0 0 1 0 0 0 0 0 0 0 0 0 0 806 775.7 12500 .02577 0 0 0 1 0 0 0 0 0 0 0 0 0 806 775.7 12500 .02577 0 0 0 0 1 0 0 0 0 0 0 0 0 806 775.6 38500 .04901 0 0 0 1 0 0 0 0 0 0 0 0 0 806 775.6 27500 .04901 0 0 0 0 1 0 0 0 0 0 0 0 0 312 220.0 9000 .01855 1 0 0 0 0 0 0 0 0 0 0 0 0 312 220.0 9000 .01855 1 0 0 0 0 0 0 0 0 0 0 0 0 312 775.7 22000 .02235 0 1 0 0 0 0 0 0 0 0 0 0 0 312 775.7 12000 .02235 0 0 1 0 0 0 0 0 0 0 0 0 0 312 775.7 12000 .02235 0 0 0 1 0 0 0 0 0 0 0 0 0 312 775.7 11000 .02235 0 0 0 0 1 0 0 0 0 0 0 0 0 3000 12939.2 60650 .15957 0 0 0 0 0 0 0 0 0 0 0 1 0 1198 4191.0 37750 .07125 0 0 0 0 0 1 0 0 0 0 0 0 0 1198 4191.0 37750 .07125 0 0 0 0 0 0 1 0 0 0 0 0 0 1198 4191.0 37750 .07125 0 0 0 0 0 0 0 1 0 0 0 0 0 1198 4191.0 30200 .07125 0 0 0 0 0 0 0 0 1 0 0 0 0 1198 4191.0 30200 .07125 0 0 0 0 0 0 0 0 0 1 0 0 0 1198 4191.0 36610 .07125 0 0 0 0 0 0 0 0 0 0 1 0 0 3000 12939.2 68200 .15957 0 0 0 0 0 0 0 0 0 0 0 1 0 312 220.0 38250 .03778 1 0 0 0 0 0 0 0 0 0 0 0 0 806 775.7 51940 .04892 1 0 0 0 0 0 0 0 0 0 0 0 0 806 775.7 52033 .04892 0 1 0 0 0 0 0 0 0 0 0 0 0 806 775.7 52900 .04892 0 0 1 0 0 0 0 0 0 0 0 0 0 885 1691.0 28000 .05353 0 0 1 0 0 0 0 0 0 0 0 0 0 885 1691.0 26600 .05353 0 0 0 1 0 0 0 0 0 0 0 0 0 885 1691.0 25200 .05353 0 0 0 0 1 0 0 0 0 0 0 0 0 885 1691.0 25200 .05353 0 0 0 0 0 1 0 0 0 0 0 0 0 885 2694.0 49500 .05353 0 0 0 0 1 0 0 0 0 0 0 0 0 885 2694.0 49500 .05353 0 0 0 0 0 1 0 0 0 0 0 0 0 885 2694.0 47531 .05353 0 0 0 0 0 0 1 0 0 0 0 0 0 885 2694.0 34320 .05353 0 0 0 0 0 0 0 1 0 0 0 0 0 885 2694.0 31680 .05353 0 0 0 0 0 0 0 0 1 0 0 0 0 885 2694.0 31741 .05353 0 0 0 0 0 0 0 0 0 1 0 0 0 1198 3071.0 49500 .05719 0 0 0 0 1 0 0 0 0 0 0 0 0 1198 3071.0 49500 .05719 0 0 0 0 0 1 0 0 0 0 0 0 0 1198 3071.0 47530 .05719 0 0 0 0 0 0 1 0 0 0 0 0 0 1198 3071.0 34320 .05719 0 0 0 0 0 0 0 1 0 0 0 0 0 1198 3071.0 31680 .05719 0 0 0 0 0 0 0 0 1 0 0 0 0 1198 3071.0 31741 .05719 0 0 0 0 0 0 0 0 0 1 0 0 0 1198 3071.0 32940 .05719 0 0 0 0 0 0 0 0 0 0 1 0 0 1859 7705.0 25204 .06415 0 0 0 0 0 0 0 0 1 0 0 0 0 1859 7705.0 27818 .06415 0 0 0 0 0 0 0 0 0 1 0 0 0 1859 7705.0 28963 .06415 0 0 0 0 0 0 0 0 0 0 1 0 0 1859 7705.0 26600 .06415 0 0 0 0 0 0 0 0 0 0 0 1 0 1859 7705.0 26600 .06415 0 0 0 0 0 0 0 0 0 0 0 0 1 1859 9707.0 31859 .06628 0 0 0 0 0 0 0 0 0 1 0 0 0 1859 9707.0 32839 .06628 0 0 0 0 0 0 0 0 0 0 1 0 0 1859 9707.0 28770 .06628 0 0 0 0 0 0 0 0 0 0 0 1 0 1859 9707.0 28770 .06628 0 0 0 0 0 0 0 0 0 0 0 0 1 3000 12192.0 81157 .16021 0 0 0 0 0 0 0 0 0 1 0 0 0 3000 12192.0 83662 .16021 0 0 0 0 0 0 0 0 0 0 1 0 0 3000 12192.0 71600 .16021 0 0 0 0 0 0 0 0 0 0 0 1 0 3000 12192.0 69136 .16021 0 0 0 0 0 0 0 0 0 0 0 0 1 806 775.7 21060 .02645 1 0 0 0 0 0 0 0 0 0 0 0 0 806 775.7 31060 .02645 0 1 0 0 0 0 0 0 0 0 0 0 0 806 775.7 31060 .02645 0 0 1 0 0 0 0 0 0 0 0 0 0 806 775.7 22480 .02645 0 0 0 1 0 0 0 0 0 0 0 0 0 806 775.7 22480 .02645 0 0 0 0 1 0 0 0 0 0 0 0 0 806 775.7 22480 .02645 0 0 0 0 0 1 0 0 0 0 0 0 0 885 1690.8 20200 .06180 0 0 0 0 1 0 0 0 0 0 0 0 0 885 1690.8 20200 .06180 0 0 0 0 0 1 0 0 0 0 0 0 0 885 2705.3 42075 .05353 0 0 0 0 0 0 1 0 0 0 0 0 0 885 2705.3 38600 .05353 0 0 0 0 0 0 0 1 0 0 0 0 0 885 2705.3 31680 .05353 0 0 0 0 0 0 0 0 1 0 0 0 0 885 2705.3 31680 .05353 0 0 0 0 0 0 0 0 0 1 0 0 0 312 220.0 15000 .01451 1 0 0 0 0 0 0 0 0 0 0 0 0 806 775.7 51940 .05289 1 0 0 0 0 0 0 0 0 0 0 0 0 806 775.7 51940 .05289 0 1 0 0 0 0 0 0 0 0 0 0 0 806 775.7 38000 .05289 0 0 1 0 0 0 0 0 0 0 0 0 0 806 775.7 39500 .05289 0 0 0 1 0 0 0 0 0 0 0 0 0 806 775.7 39500 .05289 0 0 0 0 1 0 0 0 0 0 0 0 0 806 775.7 36250 .05289 0 0 0 0 0 1 0 0 0 0 0 0 0 312 220.0 9000 .02045 1 0 0 0 0 0 0 0 0 0 0 0 0 806 775.7 25920 .02643 1 0 0 0 0 0 0 0 0 0 0 0 0 806 775.7 19350 .02643 0 1 0 0 0 0 0 0 0 0 0 0 0 806 775.7 22680 .02643 0 0 1 0 0 0 0 0 0 0 0 0 0 806 775.7 22770 .02579 0 0 0 1 0 0 0 0 0 0 0 0 0 806 775.7 22770 .02579 0 0 0 0 1 0 0 0 0 0 0 0 0 806 775.7 22770 .02579 0 0 0 0 0 1 0 0 0 0 0 0 0 1198 3084.0 48150 .05714 0 0 0 0 0 1 0 0 0 0 0 0 0 1198 3084.0 48150 .05714 0 0 0 0 0 0 1 0 0 0 0 0 0 1198 3084.0 38000 .05714 0 0 0 0 0 0 0 1 0 0 0 0 0 1198 3084.0 31000 .05714 0 0 0 0 0 0 0 0 1 0 0 0 0 1198 3084.0 31000 .05714 0 0 0 0 0 0 0 0 0 1 0 0 0 1198 3084.0 32240 .05714 0 0 0 0 0 0 0 0 0 0 1 0 0 3000 12192.0 84590 .16002 0 0 0 0 0 0 0 0 0 0 0 1 0 3000 12192.0 84590 .16002 0 0 0 0 0 0 0 0 0 0 0 0 1 312 220.0 11370 .01964 1 0 0 0 0 0 0 0 0 0 0 0 0 ;