ÔN TẬP LÝ THUYẾT THỐNG KÊ

N TP L THUYT THNG K

N TP L THUYT THNG K Cu 1Nm 2008, chi ph ti DN Ngc Hn l 1000 triu ng, nm 2009 DN d kin h chi ph 7%. Nhng thc t DN khng hon thnh k hoch ra l 3%. Yu cu tnh chi ph nm 2009 (triu ng) ?837902,1957,9990Cu 2Trong Doanh nghip X, k ny so vi k trc NSL cng nhn tng 4%, s lng cng nhn tng 5%, ga thnh n v sn phm gim 5%. Hy tnh ch s tng hp v khi lng sn xut ca DN ?109,2%102.08%102,57%103,29%Cu 3Gi 1kg c ph ht thng 5/2012 cao hn thng 4/2012 l 2%. Ga thng 6 cao hn ga thng 4 l 4%. Nh vy, gi 1kg c ph thng 6 so vi thng 5 cao hn (ly 2 s l)6,12%1,92%1,96%6%Cu 4Phn t m lT u tin khng c gii hn di v t cui cng khng c gii hn trnMc ch trnh vic hnh thnh qu nhiu tCc t phi c khong cch uCu A&B ngCu 5Ti mt DN, trong k thc hin gim chi ph thi gian lao ng cho 1 n v sn phm l 8,8% so vi k gc. Thc hin k hoch gim chi ph thi gian lao ng cho 1 n v sn phm t 96%. T l % k hoch d kin gim chi ph thi gian lao ng cho 1 n v sn phm l (ly 2 s l):220,00%95,00%9,17%105,26%Cu 6C ti liu phn t

Mt v nng sut cam l28,3429,8329,5429,86Nng sut cam (t/ha)Din tch trng (ha)3120Cu 7S tng i kt cu biu hin quan h so snh giaMc k bo co vi mc nhim v k hochMc nhim v k hoch vi mc k nghin cuHai mc khc nhau nhng c lin quan vi nhauCc mc b phn vi mc ca tng thCu 8Cng ty TNHH Ngc H c 2 ca hng. Nm 2008 t trng doanh s ca ca hng s 1 l 70%. Nm 2009,doanh s ca c cng ty tng 20% v doanh s ca ca hng s 1 chim 65% doanh s ca c cng ty. Tnh tc pht trin ca hai ca hng nm 2009 so vi 2008 ?0,98; 1,051,06; 1,020,93; 1,171,11; 1,4Cu 9Tnh % hon thnh k hoch c nm

10099,87400105,3Qu IQu IIQu IIIQu IVS cng nhn TB(ngi)10010210498Gi tr sn xut (trng)2.5702.4822.7202.650% hon thnh k hoch9810210595Cu 10Hnh thc iu tra no sau y l php lnh i vi cc n v,cc cp, cc ngnhBo co thng k nh kiu tra ton biu tra chuyn mniu tra khng ton bCu 11S tng i hon thnh k hoch khi lng sn xut ca X nghip A nm 2008 l 97%. Ta kt lunNm 2008 hon thnh vt mc k hoch ra l 97%Sn lng nm 2008 tng 97% so vi nm 2007Sn lng nm 2008 khng hon thnh k hoch ra l 3%.K hoch sn lng nm 2008 tng 97% so vi nm 2007Cu 12C ti liu v bc th ca cng nhn trong mt doanh nghip c kh nh sau:

Bc th trung bnh ca cng nhn l (ly 2 s l):28,574,003,03 C 3 cu trn u saiCp bc th1234567CngS cng nhn (ngi)5040353025155200Cu 13S lng cng nhn vin ca cng ty ICA ti cc thng

S cng nhn trung bnh qu I, II l:1.100; 11041.230; 1.289980; 1.0121.012; 1.030Thng 123456S CN trung bnh (ngi)1.1001.1021.0981.1041.1061.102Cu 14Tnh s cng nhn trung bnh c nm

101404400Tt c u saiQu IQu IIQu IIIQu IVS cng nhn TB(ngi)10010210498Gi tr sn xut (trng)2.5702.4822.7202.650% hon thnh k hoch9810210595Cu 15Nm 2011 hon thnh so vi k hoch ra l 1,09 ln. S 1,09 lS tng i cng S tng i hon thnh k hochTc pht trinS tng i nhim v k hochCu 16S lng sn phm X sn xut ti X nghip ABC c biu hin qua dy s (n v tnh: 1.000 sn phm)

Khi tnh s trung bnh di ng c 8 s trung bnh di ng nh sau:632 643,2 665,6 676 691,8 705,8 728,6 767,6 Kt qu tnh trn ng c:7 s1 s3 s5 sThng123456789101112S SP612598650636664668710705712734782905Cu 17K hoch nm 2011, cng ty cao su A phn u h gi thnh 1 tn m cao su xung 2% so vi 2010. Kt qu nm 2011 cng ty hon thnh vt k hoch 0,6%. Nh vy, gi thnh 1 tn m cao su nm 2011 so vi 2010 bng (ly 2 s l):101,43%97,41%98,59%102,41%Cu 18Chn cu ng

Gi thnh n v TB ca doanh nghip A l 19.070 Gi thnh n v TB ca doanh nghip B l 19.050 Gi thnh n v TB ca doanh nghip A l 19.090 Cu A&B ngQu Doanh nghip ADoanh nghip BGi thnh v sn phm (ngn )Chi ph sn xut (tr)Gi thnh v sn phm (ngn )Sn lng (ngn sp)I201.0001916II211.3862035III191.3871830IV171.3941919Cu 19Theo khi nim v ch s v khi nim v s tng i, trong cc ch tiu sau, ch tiu no c xem l ch s:S tng i cng S tng i ng thiS tng i kt cuC A,B&C ngCu 20i vi cc hin tng bin i chm, s dng hnh thc iu traBo co thng k nh kiu tra chuyn mniu tra khng ton biu tra ton bCu 21Ti va tri cy, ngi ta tin hnh phn thnh 4 t c khong cch u. Cho bit qu da c trng lng cao nht l 5kg v thp nht 1kg. Yu cu tnh khong cch t:211,50,25Cu 22C ti liu v tui ngh ca 200 cng nhn trong mt DN

Xc nh s Mt v s trung v v tui ngh5; 55,5; 55; 5,55; 6Tui ngh12345678910S CN812203143322513106Cu 23 bin thin cng nh th:Trnh i biu ca s bnh qun cng caoTrnh i biu ca s bnh qun cng thpKhong bin thin cng nhKhong bin thin cng lnCu 24Mun nhn xt tnh cht i biu ca gi thnh trung bnh n v sn phm ca doanh nghip A so vi doanh nghip B, ta s dng:

lch tiu chunH s bin thin lch tuyt i bnh qunKhong bin thinQuDoanh nghip ADoanh nghip BGi thnh sp (1000)Chi ph SX (tr)Gi thnh sp (1000)Sn lng (1000sp)I201.0001916II211.3862035III191.3871830IV171.3941919Cu 25Cn c vo hnh thc biu hin c th chia th thng k thnh my loi7536Cu 26D on thng k trong ngn hn c th s dng phng php no sau yPhng trnh tuyn tnhLng tng(gim) tuyt i bnh qunTc pht trin bnh qunTt c u ngCu 27Mt nhm 3 nhn vin cng chuyn cc bc in chuyn tin trong thi gian nh nhau. Ngi th 1 chuyn mt bc in mt 2 pht, ngi th 2 mt 50 giy v ngi th 3 mt 1 pht 20 giy. Tnh thi gian hao ph bnh qun chuyn xong mt bc in ca mt in bo vin trong c nhm trn.70 giy73,47 giy72,08 giy75,6 giyCu 28 lch gia lng bin ln nht v lng bin nh nht l:Phng saiKhong bin thin lch tuyt i bnh qun lch chunCu 29Hai tiu thc: x-NSL; y-gi thnh n v sn phm c mi lin h tng quan v c biu hin bng phng trnh: y=16,83-0,194x. T ta c th gii thch:X tng 1 n v th y gim trung bnh l 0,194 n vX tng 1 n v th y gim 0,194 n vX gim 1 n v th y tng 0,194 n vX=0 th y=16,83Cu 30Chn cng thc ng

Cu 31Chn cu ngTc tng lin hon bng tc pht trin lin hon tr 1 hay 100%Tng lng tng gim lin hoan bng tc pht trin nh gcTch cc tc tng lin hon bng tc tng nh gcTch cc tc pht trin lin hon bng tch cc tc tng lin honCu 32Tiu thc nu ln bn cht ca n v tng th l tiu thc:Tiu thc khng gianTiu thc thng kTiu thc thi gianTiu thc thc thCu 33Tr s lng bin ca mt tiu thc c gp nhiu nht trong cng mt tng th hay trong mt dy s phn phi l:S trung bnhS tuyt i bnh qunS Me (Med)S Mo (Mod)Cu 34Tnh gi thnh trung bnh n v sn phm ca DN X

1919,1919,0519,25Qu Doanh nghip XGi thnh n v sn phm (1.000)Sn lng (1.000sp)I1916II2035III1830IV1919Cu 35Doanh thu ca cng ty A trong nm 2010 l 4.000 triu ng. Mc tiu nm 2011 phn u tng 10% so vi nm 2010. Doanh thu thc hin c nm 2011 l 4.600 triu ng. T l % hon thnh k hoch doanh thu nm 2011 l: (ly 2 s l)95,65%104,55%115,00%127,78%Cu 36Loi iu tra no c s dng nhiu nht trong nghin cu:Trng imTon bChn muChuyn Cu 37Ch tiu no sau y khng phi l ch tiu khi lng:Nng sut lao ngS sn phm sn xutTng qu lngGi tr sn xutCu 38Ch s thng k l:S trung bnhS tuyt i thng kS tng iTt c u ngCu 39D on thng k trong ngn hn c th s dng phng php no sau y:Tc pht trin nh gcLng tng (gim) tuyt i bnh qunTc tng bnh qunTt c u ngCu 40Trong doanh nghip Y, k ny so vi k trc gi thnh n v sn phm gim 4%, chi ph sn xut tng 10,88%, nng sut lao ng mt cng nhn tng 5%. Hy tnh ch s chung v s lng cng nhn.109%110%109,88%109,38%THANK YOU !