Reliabilitas Instrumen Angket Penilaian Ahli Media Reliabilitas Instrumen Angket Penilaiain Siswa

227 228

C. Validasi Soal

S1 Pearson Correlation ,544 Valid S10 Pearson Correlation ,446 Valid S19 Pearson Correlation ,318 Valid Sig. 2- tailed ,000 Sig. 2- tailed ,001 Sig. 2- tailed ,022 N 52 N 52 N 52 S2 Pearson Correlation ,718 Valid S11 Pearson Correlation -,114 Tidak Valid S20 Pearson Correlation ,541 Valid Sig. 2- tailed ,000 Sig. 2- tailed ,423 Sig. 2- tailed ,000 N 52 N 52 N 52 S3 Pearson Correlation ,535 Valid S12 Pearson Correlation -,103 Tidak Valid S21 Pearson Correlation ,121 Tidak Valid Sig. 2- tailed ,000 Sig. 2- tailed ,468 Sig. 2- tailed ,391 N 52 N 52 N 52 S4 Pearson Correlation ,535 Valid S13 Pearson Correlation ,601 Valid S22 Pearson Correlation ,336 Valid Sig. 2- tailed ,000 Sig. 2- tailed ,000 Sig. 2- tailed ,015 N 52 N 52 N 52 S5 Pearson Correlation ,365 Valid S14 Pearson Correlation ,577 Valid S23 Pearson Correlation ,501 Valid Sig. 2- tailed ,008 Sig. 2- tailed ,000 Sig. 2- tailed ,000 N 52 N 52 N 52 S6 Pearson Correlation ,148 Tidak Valid S15 Pearson Correlation ,406 Valid S24 Pearson Correlation ,417 Valid Sig. 2- tailed ,296 Sig. 2- tailed ,003 Sig. 2- tailed ,002 N 52 N 52 N 52 S7 Pearson Correlation -,006 Tidak Valid S16 Pearson Correlation ,613 Valid S25 Pearson Correlation ,329 Valid Sig. 2- tailed ,964 Sig. 2- tailed ,000 Sig. 2- tailed ,017 N 52 N 52 N 52 S8 Pearson Correlation ,174 Tidak Valid S17 Pearson Correlation ,586 Valid T O T A L Pearson Correlation 1 Sig. 2- tailed ,218 Sig. 2- tailed ,000 Sig. 2- tailed N 52 N 52 N 52 S9 Pearson Correlation ,115 Tidak Valid S18 Pearson Correlation ,109 Tidak Valid Sig. 2- tailed ,415 Sig. 2- tailed ,443 N 52 N 52 229

D. Reliabilitas Soal

Case Processing Summary N Cases Valid 52 100,0 Excluded a 0,0 Total 52 100,0 a. Listwise deletion based on all variables in the procedure. Reliability Statistics Cronbachs Alpha N of Items ,810 17 230 Lampiran 13. Perhitungan Data Penelitian A. Perhitungan Konversi Skor Butir Angket menjadi Nilai dengan Skala 0-100 Rumus konversi skor butir menjadi skor penilaian Nilai = �� � ���� � � � � �

B. Perhitungan Interval Kategori

Nilai interval kategori ditentukan oleh beberapa hal sebagai berikut: Nilai tertinggi = 100 Nilai terendah = 0 Mi = 12 100+0 = 50 Sdi = 16 100-0 = 16,67 Tabel Interval Skor Penilaian Interval Skor Kategori Interval Penilaian � � + ,5 �� 1 � ≤ � � + 3 �� 1 Sangat LayakSangat Baik 75,1 – 100,0 � � � ≤ � � + ,5 �� 1 LayakBaik 50,1 – 75,0 � � − ,5 �� 1 � ≤ � � Cukup LayakCukup Baik 25,1 – 50,0 � � − 3 �� 1 � ≤ � � − ,5 �� 1 Kurang LayakKurang Baik 0,0 – 25,0

C. Perhitungan Data Black Box Testing No.

Dimensi Jumlah Butir Skor Min Skor Max Jumlah Skor Nilai Interval Kategori 1 Kesesuaian Media 5 5 5 100 75,1 - 100 Sangat Layak 50,1 - 75,0 Layak 25,1 - 50,0 Cukup Layak 0,0 - 25,0 Kurang Layak 2 Ketepatan Tombol Navigasi 34 34 34 100 75,1 - 100 Sangat Layak 50,1 - 75,0 Layak 25,1 - 50,0 Cukup Layak 0,0 - 25,0 Kurang Layak