ࡱ> GIF5@ J9bjbj22 (BXX4,V$DR\!uuuuuuuuuuu {.G&0V[$u "S k M s: 08CS2002  ti:  Nghin cu sai s trong iu tra thng k v cc bin php khc phc . Ch nhim: CN. L Vn Du MC TIU NGHIN CU -Tng kt cc loi sai s thng xut hin trong cc cuc iu tra thng k  Vit Nam, ng thi tm hiu cc nguyn nhn dn n cc sai s  trn c s   ra cc bin php khc phc nhm nng cao cht lng s liu thng k. NI DUNG Phn mt: TNG QUAN V SAI S IU TRA. I. Khi nim v nh ngh)a v sai s. 1.1.nh ngh)a v sai s. a. Sai s iu tra thng k. b. Sai s chn mu. c. Sai s phi chn mu. 1.2 c trng tng i ca sai s. II. Cc dng sai s iu tra. 2.1 Tng quan v cc dng sai s. 2.2 Cc dng sai st dn n sai s thng gp. III. Sai s iu tra v cht lng s liu thng k. Phn II: SAI ST TRONG KHU CHUN B IU TRA, NGUYN NHN V BIN PHP KHC PHC. I. Vai tr ca khu chun b ca cc cuc iu tra thng k. II. Cc cng vic trong khu chun b. III. Cc loi sai st pht sinh trong khu chun b iu tra, nguyn nhn v bin php khc phc. 1.Sai st pht sinh trong khu xc nh mc ch v i tng iu tra 1.1 Sai st do khu xc nh mc ch. 1.2 Sai st do khu xc nh i tng iu tra 2. Sai st pht sinh do khu xy dng khi nim v nh ngh)a ca cc tiu thc iu tra. 3. Sai st do khu thit k bng hi v hng dn cch ghi phiu. a. i vi cu hi ng. b. i vi cu hi m. 4. Sai st pht sinh do khu tp hun iu tra vin. 5. Sai st pht sinh trong khu chun b a bn iu tra. 6.Sai s do khu la chn phng php iu tra. 6.1 Phng php phng vn trc tip. 6.2 Phng php phng vn gin tip. 6.3 Phng php vit th. 6.4 Phng php t ghi. Phn II: SAI ST TRONG QU TRNH THU THP THNG TIN TI A BN IU TRA V BIN PHP KHC PHC. I. Cc loi sai st thng mc phi trong qu trnh iu tra, nguyn nhn v cc bin php khc phc. 1.1 Sai st do iu tra vin gy ra, nguyn nhn v cc bin php khc phc. 1.1.1 iu tra vin b st n v iu tra. 1.1.2 Sai st do b st khng nghi m. 1.1.3 Sai st do iu tra vin b st i tng. 1.1.4 Sai st do iu tra vin ghi chp sai. 1.1.5 Sai st do iu tra vin khng gp i tng iu tra m t ghi phiu. 1.1.6 Sai st do iu tra vin khng trc tip gp i tng  $&246fh$ \ ^ " $ @ D R T \ ^ }xhVhVhVhVhVhVhV"h+"hqW5CJOJQJ^Jo(h+"hqW5CJOJQJ^J hqW5"habhqW5CJOJQJ^Jo(habhqW5CJOJQJ^J"habhqW56CJOJQJ^JhqW56o( hqW56hqWh+"hqW5h+"hqW>*h+"hqW>*o( hqWCJhabhqWCJOJQJ^JhabhqWOJQJ^J! 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Nm chc ni dung v phng php ghi chp phiu iu tra. b. Thi  ca iu tra vin khi tip xc vi i tng iu tra. c. Nhy cm v tm l khi phng vn i tng iu tra. 1.3.5 Kim tra v sa phiu ngay ti a b. a. Kim tra tnh xc thc ca thng tin . b. Kim tra tnh lgc ca thng tin . Phn III: SAI ST TRONG KHU X L S LIU IU TRA, NGUYN NHN V CC BIN PHP KHC PHC. I. Vai tr ca khu x l s liu trong cc cuc iu tra thng k. II. Cc cng vic trong khu x l. III. Cc loi sai st pht sinh trong khu x l s liu iu tra, nguyn nhn v cc bin php khc phc. 3.1 Sai st trong khu tip nhn phiu iu tra, nguyn nhn v cc bin php khc phc. 3.2 Kim tra s b phiu, m ho v kim tra vic m ho cc thng tin  c ghi chp trong cc phiu iu tra. 3.3 Nhp tin v kim tra kt qu nhp. Phn IV: SAI S CHN MU, NGUYN NHN V CC BIN PHP KHC PHC. I. t vn . II. Sai s chn mu. 2.1 Sai s chn mu. 2.2 Sai s chn mu trung bnh. III Mi quan h gia quy m mu v sai s mu. IV. Mi quan h gia cc loi thit k mu vi sai s mu. V. Sai s mu ca mt s loi thit k mu c bn. V.1 Sai s mu trong iu tra chn mu ngu nhin n gin. V.2 Sai s mu trong iu tra chn mu phn t. V.3 Sai s mu trong iu tra chn mu chm. V.4 Sai s trong mu phn tng. VI. sai s chn mu, nguyn nhn v cc bin php khc phc. Phn VI: KT LUN V KHUYN NGH. I. Kt lun. II. 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