Validitas & Realible Atau Model Analisa Soal Atau Analisa Item Faktor 2

MODEL ANALISA VALIDITAS

/MODEL ANALSISA SOAL DENGAN STATISTIKA

PROGRAM SPSS16.0

PRESENTED BY OKY WJ

Saya ucapkan terimakasih banyak atas dosen statistika dan komputer saya, yaitu pak Irianton Aritonang. Dan ini saya buat supaya ilmu dari beliau bisa di share kemana mana. Dan saya minta maaf dan mohon kritikan jika dalam interprestasi di bawah yang saya kemukakan ada kesalahan. Saya mohon kritikan dari para pembaca semua. Semoga kita bisa lebih maju dengan pola pikir yang lebih baik. Amin… salam pelajar Indonesia. Ayo semangat untuk maju.. SEMOGA BERMANFAAT. Untuk kritik kirim ke email : [email protected]

Buat variable terlebih dahulu seperti diatas dengan tampilan variable view pada spss 16.0

Di “value” beri dua pilihan “0 untuk jawaban salah” dan “1 untuk jawaban benar”

Agen 1 sampai 6 jangan dibuat dahulu. Itu bisa menggunakan vasilitas menu “transform, computer variable” seperti langkah di lembar berikut ini.

Isikan data dengan tampilan data view seperti di atas.”0 untuk jawaban salah, dan 1 untuk jawaban benar”

Buat agen 1 sampai agen 6 dengan langkah seperti di atas, dan penamaan bisa beda. Tidak harus agen, alias terserah anda bung. Cara input datanya ditampilkan di lembar berikutnya.

Di atas adalah cara input nya. Jadi agen 1 saya beri soal no 1 ‐6, agen 2 no 7‐14, agen 3 no 15‐20, agen 4 no 21 – 27, agen 5 28 ‐34, dan agen 6 no 36 ‐40. Pembagian ini terserah anda bung.

Ini adalah model pembagian tadi yang saya bicarakan di atas.

COMPUTE AGEN1= SOAL1 + SOAL2 + SOAL3 + SOAL4 + SOAL5 + SOAL6. EXECUTE. COMPUTE AGEN2=SOAL7 + SOAL8 + SOAL9 + SOAL10 + SOAL11 + SOAL12 + SOAL13 + SOAL14. EXECUTE. COMPUTE AGEN3=SOAL15 + SOAL16 + SOAL17 + SOAL18 + SOAL19 + SOAL20. EXECUTE. COMPUTE AGEN4=SOAL21 + SOAL22 + SOAL23 + SOAL24 + SOAL25 + SOAL26 + SOAL27.

EXECUTE. COMPUTE AGEN5=SOAL28 + SOAL29 + SOAL30 + SOAL31 + SOAL32 + SOAL33 + SOAL34. EXECUTE. COMPUTE AGEN6=SOAL35 + SOAL36 + SOAL37 + SOAL38 + SOAL39 + SOAL40.EXECUTE.

Langkah analisa bisa bung lakukan seperti di atas.

Ini tampilan selanjutnya dan bung bisa analisa tiap pembgian soal tadi sesuai pembagian agen tadi. Di sini yang saya tampilkan hanya cara analisa soal no 1‐6, tetapi untuk semua hasil analisa saya tampilkan semua yang ada di bawah / lembar selanjutnya bung.

Klik satistik untuk memunculkan apa saja yang mau ditampilkan dari hasil analisa bung.

TES VALID & REALIBLE 1-6 RELIABILITY /VARIABLES=SOAL1 SOAL2 SOAL3 SOAL4 SOAL5 SOAL6 AGEN1 /SCALE('ALL VARIABLES') ALL /MODEL=ALPHA /STATISTICS=DESCRIPTIVE SCALE CORR /SUMMARY=TOTAL.

Reliability

Notes

Output Created 10-Dec-2011 07:02:06

Comments

Input Data C:\pelajaranku1\komputer\A.sav

Active Dataset DataSet1

Filter <none>

Weight <none>

Split File <none>

N of Rows in Working Data File 32

Matrix Input

Missing Value Handling Definition of Missing User-defined missing values are treated as

missing.

Cases Used Statistics are based on all cases with valid

data for all variables in the procedure.

Syntax RELIABILITY

/VARIABLES=SOAL1 SOAL2 SOAL3

SOAL4 SOAL5 SOAL6 AGEN1

/SCALE('ALL VARIABLES') ALL

/MODEL=ALPHA

/STATISTICS=DESCRIPTIVE SCALE

CORR

/SUMMARY=TOTAL.

Resources Processor Time 00:00:00.015

Elapsed Time 00:00:00.014

Di atas ditampilkan informasi tentang analisa agan agan.

[DataSet1] C:\pelajaranku1\komputer\A.sav

Warnings

The determinant of the covariance matrix is zero or approximately zero. Statistics based on its

inverse matrix cannot be computed and they are displayed as system missing values.

Di atas adalah peringatan, jika jawaban salah semua atau betul semua “gak ada variasi betul /

salah maka soal tersebut tidak akan dianalisa bung”

Scale: ALL VARIABLES

Case Processing Summary

N %

Cases Valid 32 100.0

Excludeda 0 .0

Total 32 100.0

a. Listwise deletion based on all variables in the

procedure.

Lihat tabel di atas, N menunjukkan banyaknya soal dan itu valid untuk di analisa.

Reliability Statistics

Cronbach's Alpha

Cronbach's Alpha

Based on

Standardized

Items N of Items

.653 .655 7

Ingat tampilan di atas. Dikatakan realible jika hasil dari “Cronbach's Alpha if Item Deleted” pada

tampilan tabel “Inter-Item Correlation Matrix” mendekati hasil “Cronbach's Alpha” yaitu .635 (artinya 0,635).

Item Statistics

Mean Std. Deviation N

SOAL1 .7188 .45680 32

SOAL2 .9688 .17678 32

SOAL3 .8750 .33601 32

SOAL4 .9062 .29614 32

SOAL5 .6562 .48256 32

SOAL6 .9062 .29614 32

AGEN1 5.0312 .99950 32

Hasil di atas adalah hasil perhitungan per item yang di analisa.

Inter-Item Correlation Matrix

SOAL1 SOAL2 SOAL3 SOAL4 SOAL5 SOAL6 AGEN1

SOAL1 1.000 .287 .184 .276 -.306 .276 .585

SOAL2 .287 1.000 .475 -.058 .248 -.058 .553

SOAL3 .184 .475 1.000 -.122 .124 .527 .684

SOAL4 .276 -.058 -.122 1.000 -.233 -.103 .228

SOAL5 -.306 .248 .124 -.233 1.000 -.007 .357

SOAL6 .276 -.058 .527 -.103 -.007 1.000 .555

AGEN1 .585 .553 .684 .228 .357 .555 1.000

Tabel di atas digunanak untuk mengetahui keeratan hubungan tiap soal. Apakah antara soal 1

dengan soal ke dua memiliki hubungan erat atau tidak. Dikatakan erat jika haril perpotongan

tabel di atas menunjukkan nilai mendekati 1 bahkan 1. Yang memiliki korelasi kuat akan

saya beri warna merah pada tabel di atas. Lihat warna merahnya gan. Apa interprestasi

anda… :D

Item-Total Statistics

Scale Mean if Item

Deleted

Scale Variance if

Item Deleted

Corrected Item-

Total Correlation

Squared Multiple

Correlation

Cronbach's Alpha

if Item Deleted

SOAL1 9.3438 3.136 .403 . .606

SOAL2 9.0938 3.636 .487 . .629

SOAL3 9.1875 3.190 .578 . .580

SOAL4 9.1562 3.814 .082 . .674

SOAL5 9.4062 3.539 .123 . .682

SOAL6 9.1562 3.426 .440 . .614

AGEN1 5.0312 .999 1.000 . .286

Tabel di atas ini digunkan untuk menentukan apakah soal tersebut valid atau tidak valid.

Caranya lihat tabel “r pearson”, lihat yang dua sisi kemudian lihan yang dua sisi “two-side”,

lalu lihat tingkat kepercayaan anda. Di spss default 95 %, maka alfa adalah 5% (0,05). Hasil

dari pembacaan tabel adalah 0,2050 . Kemudian lihat hasil dari “Corrected Item-Total Correlation”.

Jika hasilnya ada yang di bawah angka 0,2050 maka bisa dikatakan tidak valid / tipe soal kurang valid.

!!!!! sesungguhnya valid atau tidak sangat dipengaruhi oleh banyaknya N/ sample yang anda gunakan……

Scale Statistics

Mean Variance Std. Deviation N of Items

10.0625 3.996 1.99899 7

UNTUK HASIL DI BWH INI SILAHKAN AGAN AGAN SENDIRI YANG INTERPRESTASIKAN YAH? SEMANGATLAH UNTUK MENJADI DIRI YANG LEBIH BAIK dan BERFIKIR SECARA ILMIAH UNTUK MENGAMBIL KEPUTUSAN ATAUPUN APAPUN!!!!

TES VALID & REALIBLE 7-14 RELIABILITY /VARIABLES=SOAL7 SOAL8 SOAL9 SOAL10 SOAL11 SOAL12 SOAL13 SOAL14 AGEN2 /SCALE('ALL VARIABLES') ALL /MODEL=ALPHA /STATISTICS=DESCRIPTIVE SCALE CORR

/SUMMARY=TOTAL. Reliability

Notes


Comments



Filter <none>

Weight <none>

Split File <none>


Matrix Input


missing.



Syntax RELIABILITY


SOAL10 SOAL11 SOAL12 SOAL13

SOAL14 AGEN2


/MODEL=ALPHA


CORR

/SUMMARY=TOTAL.




Warnings

Each of the following component variables has zero variance and is removed from the scale:

SOAL12





N %


Excludeda 0 .0

Total 32 100.0


procedure.


Cronbach's Alpha

Cronbach's Alpha

Based on

Standardized

Items N of Items

.628 .529 8

Item Statistics


SOAL7 .50 .508 32

SOAL8 .91 .296 32

SOAL9 .75 .440 32

SOAL10 .97 .177 32

SOAL11 .19 .397 32

SOAL13 .94 .246 32

SOAL14 .47 .507 32

AGEN2 5.72 1.143 32


SOAL7 SOAL8 SOAL9 SOAL10 SOAL11 SOAL13 SOAL14 AGEN2

SOAL7 1.000 .107 .000 .180 .000 .000 .063 .528

SOAL8 .107 1.000 .062 -.058 -.120 .360 .087 .396

SOAL9 .000 .062 1.000 -.104 -.277 .149 .398 .497

SOAL10 .180 -.058 -.104 1.000 -.374 -.046 .169 .115

SOAL11 .000 -.120 -.277 -.374 1.000 -.207 .030 .120

SOAL13 .000 .360 .149 -.046 -.207 1.000 .243 .395

SOAL14 .063 .087 .398 .169 .030 .243 1.000 .736

AGEN2 .528 .396 .497 .115 .120 .395 .736 1.000


Scale Mean if Item

Deleted

Scale Variance if

Item Deleted

Corrected Item-

Total Correlation

Squared Multiple

Correlation

Cronbach's Alpha

if Item Deleted

SOAL7 9.94 4.254 .339 . .593

SOAL8 9.53 4.773 .279 . .614

SOAL9 9.69 4.415 .332 . .597

SOAL10 9.47 5.160 .038 . .642

SOAL11 10.25 5.161 -.054 . .671

SOAL13 9.50 4.839 .298 . .614

SOAL14 9.97 3.773 .605 . .519

AGEN2 4.72 1.305 1.000 . .232

Scale Statistics


10.44 5.222 2.285 8

TES VALID & REALIBLE 14-20 RELIABILITY /VARIABLES=SOAL15 SOAL16 SOAL17 SOAL18 SOAL19 SOAL20 AGEN3 /SCALE('ALL VARIABLES') ALL /MODEL=ALPHA /STATISTICS=DESCRIPTIVE SCALE CORR


Notes


Comments



Filter <none>

Weight <none>

Split File <none>


Matrix Input


missing.



Syntax RELIABILITY




/MODEL=ALPHA


CORR

/SUMMARY=TOTAL.




Warnings





N %


Excludeda 0 .0

Total 32 100.0


procedure.


Cronbach's Alpha

Cronbach's Alpha

Based on

Standardized

Items N of Items

.668 .634 7

Item Statistics


SOAL15 .6250 .49187 32

SOAL16 .6875 .47093 32

SOAL17 .5625 .50402 32

SOAL18 .5938 .49899 32

SOAL19 .9062 .29614 32

SOAL20 .5938 .49899 32

AGEN3 3.9688 1.35562 32



SOAL15 1.000 .174 -.033 .016 .194 .148 .514

SOAL16 .174 1.000 -.051 -.009 .246 -.283 .338

SOAL17 -.033 -.051 1.000 .297 -.068 .297 .546

SOAL18 .016 -.009 .297 1.000 -.048 .223 .553

SOAL19 .194 .246 -.068 -.048 1.000 .171 .394

SOAL20 .148 -.283 .297 .223 .171 1.000 .553

AGEN3 .514 .338 .546 .553 .394 .553 1.000


Scale Mean if Item

Deleted

Scale Variance if

Item Deleted

Corrected Item-

Total Correlation

Squared Multiple

Correlation

Cronbach's Alpha

if Item Deleted

SOAL15 7.3125 6.222 .362 . .641

SOAL16 7.2500 6.710 .172 . .678

SOAL17 7.3750 6.113 .395 . .633

SOAL18 7.3438 6.104 .405 . .631

SOAL19 7.0312 6.805 .296 . .662

SOAL20 7.3438 6.104 .405 . .631

AGEN3 3.9688 1.838 1.000 . .349

Scale Statistics


7.9375 7.351 2.71124 7

TES VALID & REALIBLE 21-27 RELIABILITY /VARIABLES=SOAL21 SOAL22 SOAL23 SOAL24 SOAL25 SOAL26 SOAL27 AGEN4 /SCALE('ALL VARIABLES') ALL /MODEL=ALPHA /STATISTICS=DESCRIPTIVE SCALE CORR


Notes


Comments



Filter <none>

Weight <none>

Split File <none>


Matrix Input


missing.



Syntax RELIABILITY


SOAL24 SOAL25 SOAL26 SOAL27 AGEN4


/MODEL=ALPHA


CORR

/SUMMARY=TOTAL.




Warnings

Each of the following component variables has zero variance and is removed from the scale:

SOAL23





N %


Excludeda 0 .0

Total 32 100.0


procedure.


Cronbach's Alpha

Cronbach's Alpha

Based on

Standardized

Items N of Items

.641 .577 7

Item Statistics


SOAL21 .97 .177 32

SOAL22 .88 .336 32

SOAL24 .91 .296 32

SOAL25 .94 .246 32

SOAL26 .88 .336 32

SOAL27 .94 .246 32

AGEN4 5.50 .762 32



SOAL21 1.000 -.068 -.058 -.046 .475 -.046 .359

SOAL22 -.068 1.000 .527 -.098 -.143 .293 .630

SOAL24 -.058 .527 1.000 -.083 -.122 .360 .643

SOAL25 -.046 -.098 -.083 1.000 -.098 -.067 .172

SOAL26 .475 -.143 -.122 -.098 1.000 -.098 .378

SOAL27 -.046 .293 .360 -.067 -.098 1.000 .516

AGEN4 .359 .630 .643 .172 .378 .516 1.000


Scale Mean if Item

Deleted

Scale Variance if

Item Deleted

Corrected Item-

Total Correlation

Squared Multiple

Correlation

Cronbach's Alpha

if Item Deleted

SOAL21 10.03 2.160 .252 . .636

SOAL22 10.12 1.790 .466 . .574

SOAL24 10.09 1.830 .506 . .571

SOAL25 10.06 2.254 .011 . .675

SOAL26 10.12 2.048 .168 . .653

SOAL27 10.06 1.996 .383 . .607

AGEN4 5.50 .581 1.000 . .238

Scale Statistics


11.00 2.323 1.524 7

TES VALID & REALIBLE 28-34 RELIABILITY /VARIABLES=SOAL28 SOAL29 SOAL30 SOAL31 SOAL32 SOAL33 SOAL34 AGEN5 /SCALE('ALL VARIABLES') ALL /MODEL=ALPHA /STATISTICS=DESCRIPTIVE SCALE CORR


Notes


Comments



Filter <none>

Weight <none>

Split File <none>


Matrix Input


missing.



Syntax RELIABILITY


SOAL31 SOAL32 SOAL33 SOAL34 AGEN5


/MODEL=ALPHA


CORR

/SUMMARY=TOTAL.




Warnings





N %


Excludeda 0 .0

Total 32 100.0


procedure.


Cronbach's Alpha

Cronbach's Alpha

Based on

Standardized

Items N of Items

.719 .713 8

Item Statistics


SOAL28 .6875 .47093 32

SOAL29 .8750 .33601 32

SOAL30 .1250 .33601 32

SOAL31 .5000 .50800 32

SOAL32 .5625 .50402 32

SOAL33 .6250 .49187 32

SOAL34 .9688 .17678 32

AGEN5 4.3438 1.59858 32


SOAL28 SOAL29 SOAL30 SOAL31 SOAL32 SOAL33 SOAL34 AGEN5

SOAL28 1.000 .561 -.357 .270 .357 .592 .266 .747

SOAL29 .561 1.000 -.429 .189 .238 .293 .475 .563

SOAL30 -.357 -.429 1.000 -.189 .143 -.098 -.475 -.083

SOAL31 .270 .189 -.189 1.000 .504 .258 .180 .655

SOAL32 .357 .238 .143 .504 1.000 .228 .204 .753

SOAL33 .592 .293 -.098 .258 .228 1.000 -.139 .662

SOAL34 .266 .475 -.475 .180 .204 -.139 1.000 .268

AGEN5 .747 .563 -.083 .655 .753 .662 .268 1.000


Scale Mean if Item

Deleted

Scale Variance if

Item Deleted

Corrected Item-

Total Correlation

Squared Multiple

Correlation

Cronbach's Alpha

if Item Deleted

SOAL28 8.0000 8.194 .670 . .659

SOAL29 7.8125 9.125 .485 . .697

SOAL30 8.5625 10.512 -.185 . .759

SOAL31 8.1875 8.351 .549 . .673

SOAL32 8.1250 8.048 .671 . .654

SOAL33 8.0625 8.383 .561 . .673

SOAL34 7.7188 9.951 .215 . .726

AGEN5 4.3438 2.555 1.000 . .604

Scale Statistics


8.6875 10.222 3.19715 8

TES VALID & REALIBLE 35-40 RELIABILITY /VARIABLES=SOAL35 SOAL36 SOAL37 SOAL38 SOAL39 SOAL40 AGEN6 /SCALE('ALL VARIABLES') ALL /MODEL=ALPHA /STATISTICS=DESCRIPTIVE SCALE CORR


Notes


Comments



Filter <none>

Weight <none>

Split File <none>


Matrix Input


missing.



Syntax RELIABILITY




/MODEL=ALPHA


CORR

/SUMMARY=TOTAL.




Warnings





N %


Excludeda 0 .0

Total 32 100.0


procedure.


Cronbach's Alpha

Cronbach's Alpha

Based on

Standardized

Items N of Items

.548 .410 7

Item Statistics


SOAL35 .6875 .47093 32

SOAL36 .7188 .45680 32

SOAL37 .2188 .42001 32

SOAL38 .5938 .49899 32

SOAL39 .1562 .36890 32

SOAL40 .2812 .45680 32

AGEN6 2.6562 1.03517 32



SOAL35 1.000 -.272 -.133 .129 -.267 .122 .302

SOAL36 -.272 1.000 .331 .049 .078 .082 .539

SOAL37 -.133 .331 1.000 .130 -.020 .005 .549

SOAL38 .129 .049 .130 1.000 -.345 -.190 .408

SOAL39 -.267 .078 -.020 -.345 1.000 -.078 .061

SOAL40 .122 .082 .005 -.190 -.078 1.000 .416

AGEN6 .302 .539 .549 .408 .061 .416 1.000


Scale Mean if Item

Deleted

Scale Variance if

Item Deleted

Corrected Item-

Total Correlation

Squared Multiple

Correlation

Cronbach's Alpha

if Item Deleted

SOAL35 4.6250 3.919 .078 . .572

SOAL36 4.5938 3.475 .354 . .487

SOAL37 5.0938 3.507 .383 . .483

SOAL38 4.7188 3.693 .180 . .543

SOAL39 5.1562 4.330 -.117 . .608

SOAL40 5.0312 3.709 .210 . .532

AGEN6 2.6562 1.072 1.000 . -.144a

a. The value is negative due to a negative average covariance among items. This violates reliability model

assumptions. You may want to check item codings.

Scale Statistics


5.3125 4.286 2.07034 7

Validitas & Realible Atau Model Analisa Soal Atau Analisa Item Faktor 2

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Transcript of Validitas & Realible Atau Model Analisa Soal Atau Analisa Item Faktor 2