Statistik tugas 1

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Statistik tugas 1

  1. 1. Nama : Mahdayani Unit /Smtr : 4 / III Prodi : PMA Email : mahdayani602@yahoo.com TUGAS 1 1. Mengurutkan Data (Array Data ) 16 16 17 18 18 19 19 20 22 23 25 26 26 26 26 27 27 27 27 28 28 30 30 30 31 31 31 33 37 37 37 38 38 39 40 41 41 42 42 42 42 42 43 45 50 51 55 56 62 63 2. Menentukan Rentang ( R ) R = X mak – X min = 63 – 16 = 47 3. Menentukan Banyak Kelas ( K ) K = 1 + 3,3 Log n = 1 + 3,3 Log 50 = 1 + 3,3 Log ( 1,698 ) = 1 + 5,603 = 6,603
  2. 2. 4. Menentukan Panjang Kelas ( P ) P=R/K = 47 / 7 =7 5. Penturusan atau Tabulasi Data Kelas 1 2 3 4 5 6 7 Interval 16 - 22 23 – 29 30 – 36 37 – 43 44 – 50 51 – 57 58 - 64 Turus IIIII IIII IIIII IIIII II IIIII II IIIII IIIII IIIII II III II Frekuensi 9 12 7 15 2 3 2 6. Distribusi Frekuensi Relatif Kelas 1 2 3 4 5 6 7 Interval 16 - 22 23 – 29 30 – 36 37 – 43 44 – 50 51 – 57 58 - 64 7. Nilai Tengah Frekuensi 9 12 7 15 2 3 2 50 Frekuensi Relatif ( % ) 18 24 14 30 4 6 4 100
  3. 3. Kelas 1 2 3 4 5 6 7 Interval 16 - 22 23 – 29 30 – 36 37 – 43 44 – 50 51 – 57 58 - 64 Frekuensi 9 12 7 15 2 3 2 Nilai Tengah 19 26 33 40 47 54 61 8. Histogram 9. Frekuensi Kumulatif Kelas Interval Nilai Tepi Kelas 1 2 3 4 16 - 22 23 – 29 30 – 36 37 – 43 15,5 22,5 29,5 36,5 Frekuensi Kurang Dari 0 9 21 28 Kumulatif Lebih Dari 50 41 29 22
  4. 4. 5 6 7 44 – 50 51 – 57 58 - 64 43,5 50,5 57,5 64,5 43 45 48 50 10. Kurva Ogif 11. Rata – Rata ( Mean ) Kelas 1 2 3 4 5 6 7 Interval 16 - 22 23 – 29 30 – 36 37 – 43 44 – 50 51 – 57 58 - 64 Jumlah Mean = fi . xi / fi Frekuensi 9 12 7 15 2 3 2 ∑ fi = n = 50 Xi 19 26 33 40 47 54 61 fi . Xi 171 312 231 600 94 162 122 ∑fi . Xi = 1692 7 5 2 0
  5. 5. = 1692 / 50 = 33,84 TUGAS 3 STATISTIK DESKRIPTIF 1. Mengurutkan Data (Array Data ) 51 52 52 52 53 53 55 56 57 58 59 60 60 61 62 62 62 62 63 63 64 64 67 67 68 68 68 70 70 70 71 72 72 72 73 74 74 77 78 79
  6. 6. 2. Menentukan Rentang ( R ) R = X mak – X min = 79 – 51 = 28 3. Menentukan Banyak Kelas ( K ) K = 1 + 3,3 Log n = 1 + 3,3 Log 40 = 1 + 3,3 (1,602) = 6,28 =6 4. Menentukan Panjang Kelas ( P ) P=R/K = 28 / 6 = 4,66 =5 No 1 2 3 4 5 6 Interval 51 – 55 56 – 60 61 – 65 66 – 70 71 – 75 76 – 80 Jumlah Fi 7 6 9 8 7 3 40 X 53 58 63 68 73 78 F.X 371 348 567 544 511 234 2575
  7. 7. 5. Mean ( rata-rata ) = 2575 / 40 = 64,375 = 64,38

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