Descriptive statistics count mean sample standard deviation sample variance minimum maximum range (000,000 lbs) 192 2,392.80 468.14 219,152.97 1526 3292 1766 100% Please see my comments below. Perfect! Mean = 2,392.8 million poundsPerfect! Standard Deviation = 468.14 Milk Cows & Production in California Pounds of Milk Production Year Period Milk Cows (000) per Cow (000,000 lbs) 1990 Jan 1118 1485 1660 1990 Feb 1122 1360 1526 1990 Mar 1126 1580 1779 1990 Apr 1130 1560 1763 1990 May 1133 1640 1858 1990 Jun 1136 1580 1795 1990 Jul 1138 1605 1826 1990 Aug 1140 1590 1813 1990 Sep 1142 1520 1736 1990 Oct 1144 1540 1762 1990 Nov 1146 1480 1696 1990 Dec 1148 1510 1733 1991 Jan 1150 1535 1765 1991 Feb 1152 1430 1647 1991 Mar 1153 1585 1828 1991 Apr 1154 1555 1794 1991 May 1155 1620 1871 1991 Jun 1156 1560 1803 1991 Jul 1156 1585 1832 1991 Aug 1157 1595 1845 1991 Sep 1157 1500 1736 1991 Oct 1157 1530 1770 1991 Nov 1158 1495 1731 1991 Dec 1159 1540 1785 1992 Jan 1160 1540 1786 1992 Feb 1164 1465 1705 1992 Mar 1169 1605 1876 1992 Apr 1171 1570 1838 1992 May 1174 1625 1908 1992 Jun 1177 1680 1860 1992 Jul 1182 1605 1897 1992 Aug 1992 Sep 1992 Oct 1992 Nov 1992 Dec 1993 Jan 1993 Feb 1993 Mar 1993 Apr 1993 May 1993 Jun 1993 Jul 1993 Aug 1993 Sep 1993 Oct 1993 Nov 1993 Dec 1994 Jan 1994 Feb 1994 Mar 1994 Apr 1994 May 1994 Jun 1994 Jul 1994 Aug 1994 Sep 1994 Oct 1994 Nov 1994 Dec 1995 Jan 1995 Feb 1995 Mar 1995 Apr 1995 May 1187 1191 1193 1196 1198 1202 1204 1207 1210 1212 1214 1218 1220 1222 1224 1226 1228 1230 1233 1236 1239 1243 1247 1251 1254 1259 1263 1267 1270 1272 1275 1279 1283 1287 1550 1525 1575 1520 1560 1515 1400 1585 1575 1640 1575 1640 1630 1570 1600 1540 1585 1630 1490 1710 1705 1770 1715 1740 1725 1675 1710 1640 1685 1660 1515 1690 1660 1730 1840 1816 1879 1818 1869 1821 1686 1913 1906 1988 1912 1998 1989 1919 1958 1888 1946 2005 1837 2114 2112 2200 2139 2177 2163 2109 2160 2078 2140 2112 1932 2162 2130 2227 1995 Jun 1995 Jul 1995 Aug 1995 Sep 1995 Oct 1995 Nov 1995 Dec 1996 Jan 1996 Feb 1996 Mar 1996 Apr 1996 May 1996 Jun 1996 Jul 1996 Aug 1996 Sep 1996 Oct 1996 Nov 1996 Dec 1997 Jan 1997 Feb 1997 Mar 1997 Apr 1997 May 1997 Jun 1997 Jul 1997 Aug 1997 Sep 1997 Oct 1997 Nov 1997 Dec 1998 Jan 1998 Feb 1998 Mar 1291 1296 1300 1305 1309 1314 1319 1322 1326 1329 1335 1341 1347 1351 1356 1362 1367 1373 1378 1382 1384 1385 1387 1389 1390 1391 1392 1394 1395 1397 1400 1402 1406 1408 1645 1685 1655 1580 1620 1545 1585 1595 1505 1635 1620 1665 1590 1615 1570 1570 1620 1570 1605 1575 1465 1705 1700 1740 1665 1715 1700 1620 1685 1620 1645 1670 1480 1665 2124 2184 2152 2062 2121 2030 2091 2109 1996 2173 2163 2233 2142 2182 2129 2138 2215 2156 2212 2177 2028 2361 2358 2417 2314 2386 2366 2258 2351 2263 2303 2341 2081 2344 1998 Apr 1998 May 1998 Jun 1998 Jul 1998 Aug 1998 Sep 1998 Oct 1998 Nov 1998 Dec 1999 Jan 1999 Feb 1999 Mar 1999 Apr 1999 May 1999 Jun 1999 Jul 1999 Aug 1999 Sep 1999 Oct 1999 Nov 1999 Dec 2000 Jan 2000 Feb 2000 Mar 2000 Apr 2000 May 2000 Jun 2000 Jul 2000 Aug 2000 Sep 2000 Oct 2000 Nov 2000 Dec 2001 Jan 1411 1414 1417 1421 1424 1428 1432 1436 1438 1443 1444 1451 1455 1457 1464 1468 1470 1476 1480 1482 1484 1493 1500 1506 1510 1516 1523 1529 1536 1541 1547 1553 1558 1563 1640 1720 1635 1625 1595 1530 1650 1590 1655 1690 1555 1795 1770 1825 1710 1710 1770 1705 1760 1715 1780 1815 1705 1820 1810 1845 1755 1820 1745 1685 1735 1665 1735 1760 2314 2432 2317 2309 2271 2185 2363 2283 2380 2439 2245 2605 2575 2659 2503 2510 2602 2517 2605 2542 2642 2710 2558 2741 2733 2797 2673 2783 2680 2597 2684 2586 2703 2751 2001 Feb 2001 Mar 2001 Apr 2001 May 2001 Jun 2001 Jul 2001 Aug 2001 Sep 2001 Oct 2001 Nov 2001 Dec 2002 Jan 2002 Feb 2002 Mar 2002 Apr 2002 May 2002 Jun 2002 Jul 2002 Aug 2002 Sep 2002 Oct 2002 Nov 2002 Dec 2003 Jan 2003 Feb 2003 Mar 2003 Apr 2003 May 2003 Jun 2003 Jul 2003 Aug 2003 Sep 2003 Oct 2003 Nov 1566 1570 1575 1581 1586 1591 1596 1602 1607 1613 1619 1624 1628 1633 1638 1642 1646 1652 1656 1662 1664 1666 1667 1672 1676 1681 1685 1685 1684 1690 1693 1695 1698 1694 1615 1790 1770 1825 1755 1770 1765 1690 1745 1685 1735 1755 1625 1835 1800 1880 1810 1815 1815 1705 1770 1695 1770 1790 1655 1850 1800 1835 1765 1755 1755 1670 1720 1665 2529 2810 2788 2885 2783 2816 2817 2707 2804 2718 2809 2850 2646 2997 2948 3087 2979 2998 3006 2834 2945 2824 2951 2993 2774 3110 3033 3092 2972 2966 2971 2831 2921 2821 2003 Dec 2004 Jan 2004 Feb 2004 Mar 2004 Apr 2004 May 2004 Jun 2004 Jul 2004 Aug 2004 Sep 2004 Oct 2004 Nov 2004 Dec 2005 Jan 2005 Feb 2005 Mar 2005 Apr 2005 May 2005 Jun 2005 Jul 2005 Aug 2005 Sep 2005 Oct 2005 Nov 2005 Dec 1697 1701 1706 1710 1716 1720 1724 1729 1733 1737 1740 1741 1741 1739 1742 1744 1747 1751 1753 1756 1759 1762 1765 1770 1771 1740 1760 1675 1815 1790 1830 1755 1780 1775 1715 1770 1700 1775 1770 1635 1850 1825 1880 1815 1780 1795 1750 1785 1725 1795 2953 2994 2858 3104 3072 3148 3026 3078 3076 2979 3080 2960 3090 3078 2848 3226 3188 3292 3182 3126 3157 3084 3151 3053 3179