Survey Method Questionnaire and Sampling S Hariharathamotharan Sri

Survey Method( Questionnaire) and Sampling S. Hariharathamotharan Sri Lanka School of Social Work National Institute of Social Development harishnisd@gmail. com 0772482236

tpdhf; nfhj; jpd; %yk; ju. Tfisr; Nrfupj; jy; • tpdhf; nfhj; J mst. PL vd; g. J ju. Tfisr; Nrfupg; gjw; fhfg; gad; g. Lj; jg; g. Lk; x. U top Kiwah. Fk; . • , jd; %yk; mjpfstpy; ms. Trhh; ju. Tfis. Ak; Xus. T gz; Grhh; ju. Tfis. Ak; Nrfupf; f Kb. Ak; . • tpdhf; nfhj; J Kiw (Questionnaire) jw; fhyj; jpy; gutyhfg; gad; g. Lj; jg; g. Lt. Jld; r%f tp. Q; Qhd Ma; T eltbf; iffspd; Kf; fpa Ma; Tf; f. Utp (Research Instrument) ahf. Tk; mikag; ng. Wfpd; w. J.

• ju. T toq; fy; %yj; jpw; F> ju. T Nrfupg; ghsd; Neubahfr; nrd; W tpdhf; nfhj; ijg; gw; wpr; rpy mwp. TWj; jy; fis toq; fp mjd; %yk; Nrfupj; jy; . • ju. Tfis toq; Fgth; > ju. T Nrfupg; ghsuplk; , Ue; J mjpf njhiytpy; , Ug; gpd; tpdhf; nfhj; Jf; fisj; jghy; %yk; m. Dg; gp mjd; %yk; ju. Tfisr; Nrfupj; jy; .

tpdhf; nfhj; jpd; cs; slf; fk; • tpdhf; fs; xt; nthd; Wk; Xh; jdpg; gl; l egupd; kdij. Nah> Xh; FOtpd; kdij. Nah my; y. J ve; jnth. U egiu. Na. Dk; gad; g. Lj; Jtjhf. Nth mikaf; $lh. J. • tpdhf; fs; Xh; x. Oq; F Kiwapy; mikjy; Ntz; Lk; . • tpdhf; nfhj; jpy; , lk; ng. Wk; xt; nth. U tpdh. Tk; > vspikahf. Tk; > RUf; fkhf. Tk; mikjy; Ntz; Lk; . • thrpf; Fk; Ngh. J fth; r; rpahf. Tk; > Rthurpakhf. Tk; , Uf; Fkh. W Nfs; tpfspd; trdeil mike; jp. Uj; jy; Ntz; Lk; . • , y. Fthd> RUf; fkhd tpilfisj; j. Ukh. W Nfs; tp tbtk; mike; jp. Uj; jy; Ntz; Lk; . , Ukhw; Wj; njup. T (Dichotomus) Kk; khw; Wj; njup. T (Trichotomus) gd; kbj; njup. T (Multiple Choice) ntspg; gilahd RUf; fkhd tpil vd; gtw; wpy; xd; whf tpilapd; tbtk; t. Uk; tifapy; tpdhf; fs; ngh. Jthf mikf; fg; g. Lfpd; w. J. • tpdhf; fs; xt; nthd; Wk; ngwg; gl Ntz; ba ju. Tf. Sld; njhlh; Gilajhf , Uj; jy; Ntz; Lk; . • x. Nu jutpidg; ngwf; $ba gy tpdhf; fisj; jtph; j; Jf; nfhs; sy; Ntz; Lk; . • Nfs; tpfspd; vz; zpf; if jpwikahf kl; Lg; gl; b. Uj; jy; Ntz; Lk; . • Nfs; tpfs; jh; f; fu. Pjpahf x. Oq; Fg. Lj; jg; gl; b. Uj; jy; Ntz; Lk; .

Fb. Ak; khjpup v. Lg; Gk; (Population and Sample) • Ma; T eltbf; iffspd; Ngh. J gad; g. Lj; jg; g. K; “Fb” (Population) v. Dk; nrhy; x. U njh. Fjp my. Ffisf; nfhz; l mjd; KOj; njhjpia. Ak; cs; slf; fpajhf mikag; ngw; wp. Ug; gijf; Fwpf; Fk; . • Fbapay; mlq; fp. As; s my. Ffspd; vz; zpf; if tiua. Wf; fg; gl; ljhapd; mf; Fb x. U “Kb. Ts; s. Fb” vd. Tk; > my. Ffspd; vz; zpf; if tiuaiw mw; wjhapd; mf; Fb x. U “Kbtw; w. Fb” vd. Tk; miof; fg; g. Lk; .

Fbj; ju. T Nrfupg; G Kiwapy; cs; s rpwg; Gf. Sk; > Fiwgh. Lf. Sk; • • rpwg; Gf; fs; , e; j Kiwap. D}lhff; fpilf; fg; ng. Wk; Kb. Tfs; kpf. Tk; ek; gfkhdit. jdpg; gl; l tp. Ug; G> nt. Wg; Gf; fs; Kb. Tfisg; ghjpf; fh. J rupahd ngh. Jikahd Kb. Tf. Sf; F tu Kb. Ak; .

• • Fiwgh. Lfs; ju. T Nrfupg; Gf; F e. Pz; l fhyk; Njit mjpf nry. T Vw; g. Lk; rpy rkaq; fspy; vy; yh tplaq; fis. Ak; gw; wpa E}w; Wf; F E}W re; jh; g; gq; fspy; , k; Kiwiag; gad; g. Lj; Jt. J kp. Fe; j rpukj; ij Vw; g. Lj; Jk; . • Fbj; ju. T Nrfupg; ig Nkw; nfhs; tjw; F gapw; rpngw; w fs cj; jp. Nahfj; jh; fs; mjpfk; Njit • murhq; fk; Nghd; w gzgy. Kk; > Ms; gy. Kk; cs; s ep. Wtd mikg; Gf; fshy; kl; LNk , j; jifa Kiwiag; gad; g. Lj; j Kb. Ak; . • , jid mbf; fb Nkw; nfhs; s Kbah. J.

khjpup v. Lg; G (Sampling) • Ma; tpy; Ma; T nra; ag; g. Lk; njh. Fjpapd; vy; yh my. Ffis. Ak; nfhz; l njh. Fjp Fbj; njhif (Population) vdg; g. Lk; my; y. J Ma; T nra; tjw; F rhj; jpakhd rfy mtjhdpg; Gf; fspd; KOj; njhifia Fbj; njhif vdf; $wyhk; . , f; Fbj; njhifapyp. Ue; J Fbiag; gw; wpa Ma; Tf; fhf njup. T nra; ag; g. Lk; x. U g. Fjp. Na khjpup (Sample) vdg; g. Lk; . khjupfs; njup. T nra; ag; g. Lk; nray; x. Oq; Nf khjpup v. Lg; G (Sampling) MFk; . v. Lf; fg; gl; l khjpupapd; %yk; ngwg; gl; l Gs; stpgu Kb. Tf. Sf; F t. Ujy; Gs; sptpgu m. Dkhdk; (Statistical Inference) vdg; g. Lk; .

khjpup v. Lj; jypd; ed; ikfs; • • • Neuk; rpf; fdg; g. Lj; jg; g. Lk; nry. T Fiwf; fg; g. Lk; mjpfs. T ek; gpf; ifahd Kb. Tfisg; ngw. Kb. Ak; . mjpfs. T jfty; fisr; Nrfupf; f Kb. Ak; . rpy re; jh; g; gq; fspy; Fbapay; KO myfpw; Fupa jft. Yk; ngw. Kbahky; , Ug; gjhy; khjpup v. Lj; jy; jhd; x. Nu topahf , Uf; Fk; . • eph; thf nrsfupak;

x. U njspthd j. Ph; khdj; ij v. Lg; gjw; F khjpupahd. J gpd; t. Uk; Kf; fpaj; Jtq; fisf; nfhz; b. Uj; jy; Ntz; Lk; . • Ma; tpd; ngh. Ul; L njup. Tf; Fl; g. Lj; Jk; khjpupahd. J x. U Fbapidg; gpujpgypg; gjhf , Uj; jy; Ntz; Lk; . khjupahd. J Fbia gpujpepjpj; Jtg; g. Lj; jf; $bajhf Fbj; njhiff; Fupa m. Nj gz; Gfisf; nfhz; b. Uj; jy; Ntz; Lk; . • Ma; tpd; ngh. Ul; Lj; njup. Tf; Fl; g. Lj; Jk; khjupfs; Vftpdkhdjhf , Uj; jy; Ntz; Lk; . Fb. Ald; xg; gp. Lk; Ngh. J Nt. Wgh. L , y; yhky; m. Nj epiyikapy; , Uj; jy; Ntz; Lk; . • Ma; tpd; ngh. Ul; Lj; njup. Tf; Fl; g. Lj; Jk; khjupfspd; vz; zpf; if Ngh. Jkhdjhf , Uj; jy; Ntz; Lk; . $ba ek; gpf; ifahd Kb. Tfis v. Lg; gjw; F Ngh. Jkhd ms. T my. Ffs; khjpupapy; Nrh; f; fg; gl; b. Uj; jy; Ntz; Lk; . • Ma; tpd; ngh. Ul; Lj; njup. Tf; Fl; g. Lj; Jk; khjupfs; cj; jkkhdjhf , Uj; jy; Ntz; Lk; . Fiwe; j nrytpy; $ba gyd; ngwf; $bajhf Njitahd ms. T khjpupiaf; nfhz; L rpwe; j Kbitg; ngwf; $ba Ma; tpid Nkw; nfhs; t. J ed; W.

khjpup v. Lg; G Kiwfs; (Methods of Sampling) • epfo; jf. T khjpup • epfo; jftw; w khjpup

epfo; jf. T khjpup v. Lj; jy; (Probability Sampling ) epfo; jf. T khjpup v. Lg; G Kiwapid Nehf; fpd; KOikj; njh. Fjpapy; , Ue; Jk; khjpupiaj; njup. T nra; Ak; Ngh. J Vw; fd. Nt jpl; lkpl; lg; gb khjpupj; njup. T , lk; ng. Wk; . , e; epfo; jf. T khjpup v. Lg; G Kiw gpd; t. Uk; gpup. Tfspy; cs; slf; fg; glyhk; .

epfo; jf. T khjpup v. Lj; jy; (Probability Sampling ) • vspa v. Okhw; W khjpup v. Lg; G (Simple Random Sampling) • gilahf; fg; gl; l khjup v. Lg; G (Stratified Sampling) • nfhj; jzp khjpup v. Lg; G (Cluster Sampling) • Kiwikahd khjpup v. Lg; G (Systematic Sampling) • gy; epiy khjpup v. Lg; G (Multi Stage Sampling) • gpu. Njr khjpup v. Lg; G (Areal Sampling)

vspa v. Okhw; W khjpup v. Lg; G / rktha; g; G khjpupj; njup. T (Simple Random Sampling) • epfo; jf. T khjpup v. Lj; jy; Kiwapid v. Okhw; W khjpup v. Lg; G Kiw (Random Sampling) vd; Wk; $wyhk; . , q; F Fbap. Ys; s xt; Nthh; myif. Ak; khjpupf; Fr; Nrh; j; Jf; nfhs; tjw; fhd epfo; jf. T rktha; g; Gf; fisf; nfhz; ljhf mikang. Wk; . mjht. J epfo; jf. T tpjpf. Sf; Nfw; g khjpup xd; iwj; njup. T nra; jiy Fwpf; fpd; w. J.

• nyhj; jh; Kiw (Lottery Method) • v. Okhw; W , yf; f ml; ltiz Kiw (Table of Random Numbers Method) • nea; aup. Kiw (Grid System) • fzdp Kiw (Computer Method) • vd; gdth. Fk; . , k; khjpup v. Lg; G Kiwfis , U Kiwfspy; gpd; gw; wyhk; . • k. Ps itj; jy; (With Replacement) • k. Ps itf; fh. J tply; (Without Replacement)

• k. Ps itj; jy; (With Replacement) • Fbapyp. Ue; J njup. T nra; ag; gl; l my. F k. Pz; Lk; Fbapy; Nrh; f; fg; glh. J m. Lj; j myif njup. T nra; jy; k. Psitj; jy; Kiwah. Fk; . • k. Ps itf; fh. J tply; (Without Replacement) • Fbapyp. Ue; J njup. T nra; ag; gl; l my. F k. Pz; Lk; Fbapy; Nrh; f; fg; glh. J m. Lj; j myif njup. T nra; jy; k. Psitg; G mw; w Kiwah. Fk; .

nyhj; jh; Kiw (Lottery Method) • , J kpf. Tk; , y. Fthd Kiwah. Fk; . , k; Kiwapy; Fbapd; xt; Nthh; my. Ff. Sk; , yf; fkplg; gl; Lg; gpd; dh; ms. T> tbtk; > epwk; vd; gd x. Nu jd; ikapy; mikangw; w rp. W fljhrpj; Jz; Lfspy; Fbkbj; J ed; whff; FYf; fpa gpd; dh; khjpupfshf v. Lg; gjw; Fjl j. Ph; khdpj; Js; s ms. T vz; zpf; ifahd Jz; Lfis v. Lj; J mtw; Wf; Fupa , yf; fk; nfhz; l Fbap. Ys; s my. Ff; khjpupahfj; njup. Tnra; ag; g. Lk; .

Numbers Method) • Fbj; njhif kpfg; ngupajhf mikag; ng. Wk; Ngh. J (Kbtpy; Fbj; njhif) nyhj; jh; Kiwiag; ghtpf; f Kbah. J , Uf; Fk; . Mjw; Fg; gjpyhf , k; Kiw gad; g. Lj; jg; glyhk; . , k; Kiwap. Yk; nyhj; jh; Kiw. Nghy Fbapd; xt; Nthh; my. Fk; , yf; fkplg; g. Lk; . gpd; dh; v. Okhw; W khjpup , yf; f ml; ltiz %yk; khjpupf; fhd my. Ffs; njup. T nra; ag; g. Lk; .

gilahf; f Kiw khjpup v. Lg; G (Stratified Sampling) • Fbapy; cs; s nkhj; j c. Wg; Gf; fis cg njh. Fjpfshfg; gpupj; J gpupf; fg; gl; l xt; nth. U gpuptpyp. Ue; Jk; Ma; T nra; aj; Njitahd ms. T khjpupfisj; njup. T nra; tjid. Na , k; Kiw Fwpf; fpd; w. J

Stratified SAMPLING…… Specialization stream No of students Proportion of each stream Arts 40 0. 4 Commerce 20 0. 2 Social Work 30 0. 3 Marketing 10 0. 1 Strata Sample Size Arts 30*0. 4= 12 Commerce 30*0. 2=6 Social work 30*0. 3=9 Marketing 30*0. 1=3

gilahf; f Kiw khjpup v. Lg; G Kiwapd; ed; ikfs; • Fbia ed; whfg; gpujpepjpj; Jtg; g. Lj; Jfpd; w. J. • jp. Uj; jkhd Kb. Tfis c. Wjpg; g. Lj; Jfpd; w. J • gilfshfg; gpupj; Js; sjhy; eph; tfpg; g. Jk; > ifahs; t. Jk; Rygkhf , Uf; Fk; • Fbahd. J Xupdkhf , Ug; gp. Dk; kpf. Tk; ngh. Uj; jkhd. J. • Xupdkw; w Fbahf , Uf; Fk; Ngh. J , J kpf. Tk; ek; gpf; ifahd Kb. Tfis. Na j. Ufpd; w. J. gilahf; f Kiw khjpup v. Lg; G Kiwapd; j. Pikfs; • Gilfshfg; gpupf; fg; g. Ltjhy; gzk; > Neuk; tpuak; • Rupahd Kiwapy; gilfs; gpupf; fg; glhtpl; lhy; t. O Vw; g. Lk; tha; g; G mjpfkhf cs; s. J.

Kiwikahd khjpup v. Lg; G (Systematic Sampling) • KOf; Fbj; njhifia. Ak; njupe; jp. Uf; Fk; re; jh; g; gj; jpy; , J ghtpf; fg; g. Lfpd; w. J. Fbapd; vy; yh c. Wg; Gf; fspid. Ak; cs; slf; fpa KOg; gl; bay; , Ue; jhy; , k; Kiwiag; gad; g. Lj; jyhk; . njup. T nra; ag; gl Ntz; ba khjpupapd; msitj; j. Ph; khdpj; j gpd; c. Wg; Gf; fspil. Na Fwpg; gpl; l , ilntspfusg; Ng. Ztjd; %yk; Nkw; nfhs; sg; g. Lk; khjpupj; njup. T nra; jiy , k; Kiw Fwpf; fpw. J

SYSTEMATIC SAMPLING……

Kiwahd khjpup v. Lg; G Kiwapd; ed; ikfs; • vspa v. Okhw; W khjpup v. Lg; gp. Yk; ghh; f; f kpf. Tk; , y. Fthdjh. Fk; > nrsfupakhd. Jk; MFk; . • Ntiy. Ak; Neu. Kk; kpf. Tk; Fiwf; fg; g. Lfpd; w. J. • x. U jp. Ug; jpfukhd Kbthf , Ug; g. Njh. L> Kbtw; w Fbf; Fk; , k; Kiw gad; g. Lj; jg; glyhk; . • Kiwahd khjpup v. Lg; G Kiwapd; ed; ikfs; Kiwahd khjpup v. Lg; G Kiwapd; j. Pikfs; • Fb KOtij. Ak; gpujpepjpj; Jtg; g. Lj; jtpy; iy. • Ma; T nra; gtupd; jdpg; gl; l nry; thf; F , lk; ngw tha; g; Gf; fs; cz; L.

gq; Ft. Pj khjpup v. Lg; G (Quota Sampling) • gq; Ft. Pj khjpup v. Lg; G Kiwahd. J gil. Kiw khjpup v. Lj; jy; Kiwapid xj; j khjpup v. Lj; jy; Kiwah. Fk; . Fbahd. J rpy gz; Gfif; nfhz; L (ta. J> njhopy; > t. Ukhdk; > fy; tpj; juk; ) g. Fjpfshfg; gpupf; fg; gl; L xt; nth. U gpup. Tf. Sk; mtw; wpd; njhiff; Nfw; g Fwpj; j x. U ms. Tila gq; Ffshfg; (Quota) gpupf; fg; gl; Lj; njup. Tfs; Nkw; nfhs; sg; g. Lk; .

Quota Sampling Quota sampling may be viewed as two-stage restricted judgmental sampling – The first stage consists of developing control categories, or quotas, of population elements. – In the second stage, sample elements are selected based on convenience or judgment. Control Characteristic Sex Male Female Population composition Sample composition Percentage Number 48 52 ____ 100 480 520 ____ 1000

• gq; Ft. Pj khjpup v. Lg; G Kiwapd; ed; ikfs; • gzk; > Neuk; vd; gtw; iw Nrkpf; f Kb. Ak; . • gapw; wg; gl; l Ma; thsh; fs; %yk; , e; j khjpupj; njup. T nra; ag; gbd; kpf. Tk; ek; gj; j. Fe; j Kb. Tfisj; j. Uk; . • gq; Ft. Pj khjpup v. Lg; G Kiwapd; j. Pikfs; • jdpg; gl; l j. Ph; g; Gk; > jdpg; gl; l t. OTk; , Ug; gjw; F tha; g; Gs; s. J.

epfo; jftw; w khjpup v. Lg; G (Non- Probability Sampling) • epfo; jf. T tpjpfs; gw; wpf; f. Uj; jpw; nfhs; shky; khjpup v. Lj; jy; epfo; jftw; w khjpup v. Lg; gh. Fk; . epfo; jf. T khjpup v. Lj; jy; fbdkhd re; jh; g; gj; jpy; my; y. J tpiuthf khjpup xd; iw njup. T nra; a. Ntz; ba re; jh; g; gj; jpy; gad; g. Lj; jg; g. Lfpd; w. J

• j. Ph; g; G khjpup v. Lg; G (Judgment Sampling/ Purposive Sampling) • , y. F khjpup v. Lg; G (Convenience Sampling) • Nehf; fj; Jld; $ba khjpup v. Lg; G (Purposive Sampling)