Case Processing Summary
N Cases
Valid 30
100.0 Excluded
a
.0 Total
30 100.0
a. Listwise deletion based on all variables in the procedure.
Reliability Statistics
Cronbachs Alpha Part 1 Value
.875 N of Items
15
a
Part 2 Value .888
N of Items 15
b
Total N of Items 30
Correlation Between Forms .752 Spearman-Brown
Coefficient Equal Length
.858 Unequal Length
.858 Guttman
Split-Half Coefficient
.852
a.The items are: VAR00001, VAR00002, VAR00003, VAR00004, VAR00005, VAR00006, VAR00007, VAR00008, VAR00009,
VAR00010, VAR00011, VAR00012, VAR00013, VAR00014, VAR00015.
b. The items are: VAR00016, VAR00017, VAR00018, VAR00019, VAR00020, VAR00021, VAR00022, VAR00023, VAR00024,
VAR00025, VAR00026, VAR00027, VAR00028, VAR00029, VAR00030.
Instrumen pengukuran variabel supervisi kepala sekolah X
2
yang diujicobakan sebanyak 30 butir. Berdasarkan hasil perhitungan diperoleh
koefisien korelasi terendah r
hitung
= 0,079 dan t
Tabel
= 2,011. Dengan demikian tiga instrumen tidak dapat dipakai karena tidak valid, sedangkan 27 butir
instrumen lainnya langsung dapat dipergunakan untuk pengumpulan data dan hasil untuk realibilitasnya dinyatakan realibel.
3. Validitas Butir Angket Variabel Y
Tabel 3.6
Validitas Butir Angket Variabel Y Item-Total Statistics
Scale Mean if Item Deleted
Scale Variance if Item Deleted
Corrected Item- Total
Correlation Squared
Multiple Correlation
Cronbachs Alpha if Item
Deleted VAR00001
99.5333 20.602
.057 .
.388 VAR00002
99.5667 20.599
.071 .
.384 VAR00003
99.9000 20.645
.036 .
.393 VAR00004
99.8333 18.764
.281 .
.333 VAR00005
99.5000 18.810
.386 .
.320 VAR00006
99.5667 19.289
.331 .
.335 VAR00007
99.5667 20.185
.164 .
.367 VAR00008
99.7667 21.220
-.043 .
.410 VAR00009
99.6000 20.455
.094 .
.380 VAR00010
99.5333 20.257
.129 .
.373 VAR00011
99.3333 21.057
.027 .
.391 VAR00012
99.5000 21.293
-.030 .
.402 VAR00013
99.5667 20.599
.056 .
.388 VAR00014
99.6333 20.378
.089 .
.381 VAR00015
99.7333 19.030
.131 .
.371 VAR00016
99.7667 20.737
-.050 .
.430 VAR00017
99.3667 18.861
.545 .
.312 VAR00018
99.5667 19.357
.186 .
.357 VAR00019
99.7667 20.323
.020 .
.403 VAR00020
99.4333 19.702
.318 .
.345 VAR00021
99.4000 20.731
.062 .
.386 VAR00022
99.5333 20.602
.043 .
.391 VAR00023
99.9667 21.482
-.104 .
.436
Case Processing Summary
N Cases
Valid 30
100.0 Excluded
a
.0 Total
30 100.0
a. Listwise deletion based on all variables in the procedure.
Reliability Statistics
Cronbachs Alpha Part 1 Value
.203 N of Items
12
a
Part 2 Value
.027 N of Items
11
b
Total N of Items 23
Correlation Between Forms .434 Spearman-Brown
Coefficient Equal Length
.605 Unequal Length
.606 Guttman
Split-Half Coefficient
.604
a.The items
are: VAR00001,
VAR00002, VAR00003,
VAR00004, VAR00005, VAR00006, VAR00007, VAR00008, VAR00009, VAR00010, VAR00011, VAR00012.
b.The items
are: VAR00013,
VAR00014, VAR00015,
VAR00016, VAR00017, VAR00018, VAR00019, VAR00020, VAR00021, VAR00022, VAR00023.
