4.2 Hasil Penelitian
4.2.1 Uji Validitas dan Uji Reliabilitas
1. Uji Validitas
Tabel 4.1 Hasil Uji Validitas
Scale Mean if Item Deleted
Scale Variance if Item Deleted
Corrected Item- Total Correlation
Cronbachs Alpha if Item Deleted
Keterangan
VAR00001 323.7667
865.702 .790
.985
Valid
VAR00002 323.9667
853.275 .857
.985
Valid
VAR00003 323.6000
871.628 .450
.986
Valid
VAR00004 323.7000
867.459 .566
.986
Valid
VAR00005 323.9000
879.197 .367
.986
Valid
VAR00006 323.8000
873.407 .533
.986
Valid
VAR00007 323.7667
867.082 .742
.985
Valid
VAR00008 323.7667
865.702 .790
.985
Valid
VAR00009 323.8000
866.510 .779
.985
Valid
VAR00010 323.7667
867.082 .742
.985
Valid
VAR00011 323.9667
853.275 .857
.985
Valid
VAR00012 323.9000
868.300 .601
.986
Valid
VAR00013 323.7667
867.082 .742
.985
Valid
VAR00014 323.7667
865.702 .790
.985
Valid
VAR00015 323.7667
865.426 .634
.986
Valid
VAR00016 323.7667
865.702 .790
.985
Valid
VAR00017 324.0000
872.276 .541
.986
Valid
VAR00018 323.7667
867.082 .742
.985
Valid
VAR00019 323.8000
866.510 .779
.985
Valid
VAR00020 323.9667
853.275 .857
.985
Valid
VAR00021 323.9667
853.275 .857
.985
Valid
VAR00022 323.7333
872.409 .546
.986
Valid
VAR00023 323.7333
869.720 .508
.986
Valid
VAR00024 323.9667
853.275 .857
.985
Valid
VAR00025 323.8000
866.510 .779
.985
Valid
VAR00026 323.7667
865.702 .790
.985
Valid
VAR00027 323.8000
866.510 .779
.985
Valid
VAR00028 323.7000
871.528 .388
.986
Valid
VAR00029 323.7667
865.702 .790
.985
Valid
VAR00030 323.9667
853.275 .857
.985
Valid
VAR00031 323.7333
869.720 .508
.986
Valid
VAR00032 323.6000
871.628 .450
.986
Valid
VAR00033 323.7000
867.459 .566
.986
Valid
VAR00034 323.9000
879.197 .367
.986
Valid
VAR00035 323.8000
873.407 .533
.986
Valid
VAR00036 323.9667
853.275 .857
.985
Valid
VAR00037 323.8000
866.510 .779
.985
Valid
Universitas Sumatera Utara
VAR00038 323.8000
866.510 .779
.985
Valid
VAR00039 323.7667
865.702 .790
.985
Valid
VAR00040 323.9667
853.275 .857
.985
Valid
VAR00041 323.9000
868.300 .601
.986
Valid
VAR00042 323.8000
866.510 .779
.985
Valid
VAR00043 323.7667
865.702 .790
.985
Valid
VAR00044 323.7667
865.426 .634
.986
Valid
VAR00045 323.7667
865.702 .790
.985
Valid
VAR00046 324.0000
872.276 .541
.986
Valid
VAR00047 323.7667
867.082 .742
.985
Valid
VAR00048 323.7667
865.702 .790
.985
Valid
VAR00049 323.9667
853.275 .857
.985
Valid
VAR00050 323.8000
866.510 .779
.985
Valid
VAR00051 323.7333
872.409 .546
.986
Valid
VAR00052 323.7333
869.720 .508
.986
Valid
VAR00053 323.7667
865.702 .790
.985
Valid
VAR00054 323.7667
865.702 .790
.985
Valid
VAR00055 323.9667
853.275 .857
.985
Valid
VAR00056 323.9667
853.275 .857
.985
Valid
VAR00057 323.7000
871.528 .388
.986
Valid
VAR00058 323.7667
865.702 .790
.985
Valid
VAR00059 323.7667
865.702 .790
.985
Valid
VAR00060 323.9667
853.275 .857
.985
Valid
VAR00061 323.6000
871.628 .450
.986
Valid
VAR00062 323.7000
867.459 .566
.986
Valid
VAR00063 323.9000
879.197 .367
.986
Valid
VAR00064 323.8000
873.407 .533
.986
Valid
VAR00065 323.7667
865.702 .790
.985
Valid
VAR00066 323.9667
853.275 .857
.985
Valid
VAR00067 323.8000
866.510 .779
.985
Valid
VAR00068 323.7333
869.720 .508
.986
Valid
VAR00069 323.9667
853.275 .857
.985
Valid
VAR00070 323.9000
868.300 .601
.986
Valid
VAR00071 323.8000
866.510 .779
.985
Valid
VAR00072 323.7667
865.702 .790
.985
Valid
VAR00073 323.7667
865.426 .634
.986
Valid
VAR00074 323.8000
866.510 .779
.985
Valid
VAR00075 324.0000
872.276 .541
.986
Valid
VAR00076 323.7667
867.082 .742
.985
Valid
Sumber: Hasil Pengujian SPSS 17.0 for Windows, 2013
Pada tabel 4.1 terlihat bahwa semua variabel yang termasuk dalam variabel Motivasi, Lingkungan Kerja dan Kinerja Karyawan valid karena nilai
Corrected Item-Total Correlation-nya lebih besar dari 0,361.
Universitas Sumatera Utara
2. Uji Reliabilitas
Tabel 4.2 Hasil Uji Reliabilitas
Reliability Statistics
Cronbachs Alpha
N of Items .986
76
Sumber: Hasil Pengujian SPSS 17.0 for Windows, 2013
Pada tabel 4.2 variabel Motivasi, Lingkungan Kerja dan Kinerja Karyawan menunjukkan hasil pengujian reabilitas pada instrumen dengan nilai Cronbach’s
Alpha atau r alpha sebesar 0,985. Suatu variabel dikatakan reliabel jika memberikan nilai Cronbach Alpha 0,8 yang berarti baik atau sangat
meyakinkan. Hal ini membuktikan instrumen penelitian berupa kuesioner ini adalah reliabel karena r alpha yang bernilai 0,985 lebih besar dari 0,8.
4.2.2 Analisis Deskriptif Responden
Kategori