Siapa expert SPSS..Cronbach Alpha

Salam..
Saya nak tanya ade sape2 yg kenal org yg expert/ yg bleh mengajar cara pakai SPSS(statistical package for social science) x?
Saya sedang buat kajian menggunakan Questionnaire..drpd Questionnaire tu saya kena masukkan data n  interpret result ke dalam SPSS...
kalau ada sape2 yg boleh tolong/yg tau kat mana saya leh dapatkan servis ni hrp dpt bgtau saya ASAP sebelum 24November2006..
Kalau boleh yg dekat area S.Alam..
Terima Kasih

Salam,
Nur,
0196505988/0129235230
misscindut_2001@yahoo.com

purpler

lor...nape tak tnya kat bod mathematics???
ni pun dah terlepas...
tapi aku explain sikitla utk sape² yg nak tau....

-reliability of scales:cronbach alpha

-reliability is the degree to which a scale/instrument consistently measures whatever it measures.

-compute cronbch alpha, a coefficient whose value is between 0 and 1. If the value exceeds 0.60, then the scale is said to have internal consistency-hence reliable.

-If alpha is small, carry out factor analysis to isolate multi-dimensios or distint components.

-re-compute alpha for each component identified.

formulanya:



contoh:

DATA LIST FREE
/q1 q2 q3 q4.
BEGIN DATA.
2 3 5 5
5 5 4 4
4 5 5 5
4 3 4 4
3 3 5 5
3 3 4 5
3 4 4 4
4 4 5 5
4 5 5 5
4 4 3 3
4 4 5 5
5 5 4 4
4 4 4 4
4 3 5 5
4 4 5 5
3 3 4 5
4 5 4 4
5 5 5 5
5 5 4 4
4 4 4 4
4 4 4 4
4 4 4 4
3 4 5 5
5 3 5 5
5 5 3 3
3 3 4 4
4 4 4 4
3 3 5 5
4 4 3 3
4 4 5 5
4 4 5 5
4 5 5 5
4 4 5 5
4 5 5 5
4 4 5 5
3 3 4 4
4 3 5 4
3 4 5 5
4 4 5 4
3 4 4 4
4 5 5 5
5 5 5 5
4 4 5 5
4 4 4 4
4 4 5 5
3 4 4 4
5 5 5 5
4 5 4 4
3 4 4 4
5 3 4 4
5 3 4 4
4 5 4 4
2 5 5 5
3 4 5 5
4 3 5 5
4 4 4 4
4 4 5 5
3 4 4 4
4 4 5 4
4 4 5 5
END DATA.
To compute Cronbach's alpha for all four items - q1, q2, q3, q4 - use the RELIABILITY-(click STATISTICS) command:
RELIABILITY
  /VARIABLES=q1 q2 q3 q4.
Here is the resulting output from the above syntax:
  R E L I A B I L I T Y   A N A L Y S I S   -   S C A L E   (A L L)
Reliability Coefficients

N of Cases =     60.0                    N of Items =  4

Alpha =    .3924

  

Here, the reliability is shown to be low using all four items because alpha is .3924. (Note that a reliability coefficient of .60 or higher is considered  "acceptable" in most Social Science research situations). Perhaps the data are multidimensional? To check the dimensionality of the data, use the factor command-kena buat factor analysis pulak....:nerd:

[ Last edited by  purpler at 1-12-2006 01:17 PM ]

purpler

nak analyse data ni tak bole buat satu hari je tau....
nak minta tolong last minit....
susahla....
macam aku dulu lect bagi satu sem tu buat questionnaire, analyse & semua skali....
analyse je makan masa sebulan....
so, jangan buat keje last minit....