sampling method

nie adalah cara camne nak buat sampling method.,,

first skali kalu nak buat sampling method kena ada sampling frame

sampling frame :collection of property or element that may include in our sample...

secara generalnya ada 2 type of sampling method

• probability
• non-probability

probability sample : a method where everybody in sampling frame has non-zero probability to become a sample (maksudnya sume orang ad probability utk jd sample )

under probability method ada 5 method

• simple random sampling
• systematic sampling
• stratified sampling
• cluster sampling
• multi-stage sampling

apa beza semua method nie??

camnie....

contohnya:;

dalam sebuah sekolah ada 1000 orang anak murid , anda perlu sample sebanyak 200 pelajar........kita akan guna semua method diatas...

1. simple random sampling...

mula2 mesti ada sampling frame...then select 200 student based on random table or by using software

2.systematic sampling

sample was picked up based on the interval...ada 1000 org pelajar...,nak 200,, jd 1000/200=5..,jd sample akan dipilih setiap 5 interval....nombor berapa nk start use draw...

3.stratified sampling

sample dibahagikan mengikut sex,age or anything..and the sample aws taken equally...contohnya sebab kita mau 200 orang, jd kta bahagikan amek 100 pompuan , 100 lelaki...pastu camne nak pilih pompuan / lelaki tuh bleh guna either simple random atau systematic...

4.cluster sampling

cluster sampling nie maksudya kita amek sesuatu sample tu base on cluster...cth nye kalau lam case palajar nie...kte ad 5 buah sekolah...kte choose palajar dari sekolah A and B shj....ia jimat kos...

5.multi stage sampling

at least guna 2 method....contohnya mula2 buat simple sampling ,,pastu buat systematic sampling plop......