Indices (bilangan pangkat dan akar)
Rules of indices (pangkat)
contoh soal:
Rational exponents (pangkat pecahan)
Algebraic Operation on Surds
multiplication
division
blog math
Thursday, October 6, 2016
Thursday, September 15, 2016
Statistics (statistika)
-statistics is the science of collecting, analyzing, interpreting or explaining, and presenting data
it can be employed to make an accurate decision
A. collecting data
1.definition of data and datum
a.datum: facts needed
b.data: collection of several datum
2.definition of population and sample
a.population: all subjects being studied
b.sample: part of population being studied
3.type of data
a. discrete data (data cacahan)
data obtained by counting (menghitung)
example: data jumlah siswa kelas 9
data jumlah papan tulis di SDH
b. continu data (data ukuran)
data obtained by measuring (mengukur)
example: data tinggi badan siswa
data ukuran sepatu
-qualitative data: data not in form of number
example: data makanan kesukaan kelas 9
data warna tinja setiap hari
4.methods in data collecting
a.interview (wawancara)
b.questionnaire (pertanyaan tertulis)
c.observation (pengamatan)
5.measures of central tendency (ukuran pemusatan data)
a.mean (rata-rata)
b.median (nilai tengah)
c.modus (paling sering muncul)
6.measures of dispersion (ukuran penyebaran data)
a.range (jangkauan)
b.quartile (Q1, Q2, Q3)
c.interqualtile range
B.presenting statistical data
1.pictogram (pictorial graph)
2.bar chart
3.line chart
4.pie chart
measures of central tendency (ukuran pemusatan data)
a) mean (rata-rata)
b) median (nilai tengah)
-data berjumlah ganjil
-data berjumlah genap
c) modus
-data dengan frekuensi (muncul) paling banyak
measures of dispersion (ukuran penyebaran data)
a.range (jangkauan)
R= biggest datum - smallest datum
b. quartile
data ganjil
data genap
c. Interquartile Range
d. simpangan kuartil
contoh soal:
1. tentukan Q1,Q2,Q3 dari: 3,4,7,8,7,4,8,9,10,8,3,7,12,4,7,8,8,9
jawab:
Rata-rata Gabungan (RRG)
contoh:
Statistic diagrams
-statistics is the science of collecting, analyzing, interpreting or explaining, and presenting data
it can be employed to make an accurate decision
A. collecting data
1.definition of data and datum
a.datum: facts needed
b.data: collection of several datum
2.definition of population and sample
a.population: all subjects being studied
b.sample: part of population being studied
3.type of data
a. discrete data (data cacahan)
data obtained by counting (menghitung)
example: data jumlah siswa kelas 9
data jumlah papan tulis di SDH
b. continu data (data ukuran)
data obtained by measuring (mengukur)
example: data tinggi badan siswa
data ukuran sepatu
-qualitative data: data not in form of number
example: data makanan kesukaan kelas 9
data warna tinja setiap hari
4.methods in data collecting
a.interview (wawancara)
b.questionnaire (pertanyaan tertulis)
c.observation (pengamatan)
5.measures of central tendency (ukuran pemusatan data)
a.mean (rata-rata)
b.median (nilai tengah)
c.modus (paling sering muncul)
6.measures of dispersion (ukuran penyebaran data)
a.range (jangkauan)
b.quartile (Q1, Q2, Q3)
c.interqualtile range
B.presenting statistical data
1.pictogram (pictorial graph)
2.bar chart
3.line chart
4.pie chart
measures of central tendency (ukuran pemusatan data)
a) mean (rata-rata)
b) median (nilai tengah)
-data berjumlah ganjil
-data berjumlah genap
c) modus
-data dengan frekuensi (muncul) paling banyak
measures of dispersion (ukuran penyebaran data)
a.range (jangkauan)
R= biggest datum - smallest datum
b. quartile
data ganjil
data genap
c. Interquartile Range
d. simpangan kuartil
contoh soal:
1. tentukan Q1,Q2,Q3 dari: 3,4,7,8,7,4,8,9,10,8,3,7,12,4,7,8,8,9
jawab:
Rata-rata Gabungan (RRG)
contoh:
Statistic diagrams
Friday, August 12, 2016
Congruence and Similarity
Congruence: sama
cara untuk cek persamaan:
-bentuk harus sama
-panjang sisi harus sama
- setiap sudut harus memiliki angle yang sama
-SSS (side-side-side)
-SAS (side-angle-side)
-AAS (angle-angle-side)
Similarity: mirip
cara untuk cek kemiripan:
-panjangnya berbeda (harus dalam ratio)
-bentuknya sama
-semua sudut harus memiliki angle sama
-AA (angle-angle)
-SSS (side-side-side)
-SAS (side-angle side)
contoh soal Congruence:
contoh soal similarity:
contoh soal similarity (dengan hitungan):
similarity in right angle triangles
contoh soal:
similarity in trapezium
Congruence: sama
cara untuk cek persamaan:
-bentuk harus sama
-panjang sisi harus sama
- setiap sudut harus memiliki angle yang sama
-SSS (side-side-side)
-SAS (side-angle-side)
-AAS (angle-angle-side)
Similarity: mirip
cara untuk cek kemiripan:
-panjangnya berbeda (harus dalam ratio)
-bentuknya sama
-semua sudut harus memiliki angle sama
-AA (angle-angle)
-SSS (side-side-side)
-SAS (side-angle side)
contoh soal Congruence:
contoh soal similarity:
contoh soal similarity (dengan hitungan):
similarity in right angle triangles
contoh soal:
similarity in trapezium
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