This document defines statistics and provides examples of its uses and concepts. Statistics is defined as the science of planning, collecting, analyzing, interpreting and presenting data. Examples of common statistical concepts are given, such as measures of central tendency including mean, median and mode. The document also gives examples of how statistics is used in various contexts like business, research, and everyday life.

1. Definition Of Statistics
• Statistics is the science that studies how to plan,
collect, analyze, interpret, and present data. In
short, statistics is a science with respect to data.
• Statistika adalah ilmu yang mempelajari
bagaimana merencanakan, mengumpulkan,
menganalisis, menginterpretasi, dan
mempresentasikan data. Singkatnya, statistika
adalah ilmu yang berkenaan dengan data.

2. • Data = information obtained from the result of
observation or research
• Data collection can be performed through
interviews / quetionnaries followed by counting,
measuring or by recording the data using the
tallies
• The measures of central tendency consist of
mean, mode and median

3. Mean, Mode and Median.......
• Mean : the average value of a group
• Mode : the value which appears most eften or
the value of hingest frequency
• Median : the middle value after the data are
ordered

4. data can be presented in two forms,
namely a table/list and a
graph/diagram

5. Table/List
Frequency

6. Graph/Diagram
0
1
2
3
4
5
6
Series 1
Series 2
Series 3
0
1
2
3
4
5
6
Series 1
Series 2
Series 3
Sales
1st Qtr
2nd Qtr
3rd Qtr
4th Qtr

7. • A line diagram is used to show the development
of a continous condition
• In a pie diagram, the size of the central angle of
each sector is proportional to the size of tyhe
data each category

8. MANFAAT STATISTIKA
• Manfaat statistika dalam kehidupan sehari-hari sangat beragam sebagai contoh
sederhana:
• • Bagi ibu-ibu rumah tangga mungkin tanpa disadari mereka telah
menerapkan statiska. Dalam membelanjakan uang untuk kebutuhan
keluarganya sering melakukan perhitungan untung rugi, berapa jumlah uang
yang harus dikeluarkan setiap bulannya untuk uang belanja, listrik, dll.
• • Sebagai mahasiswa, selain statistika dipelajari secara formal sebenarnya
kita sudah menggunakannya dalam perhitungan Indeks prestasi.
• • Dalam dunia bisnis, para pemain saham atau pengusaha sering
menerapkan statistika untuk memperoleh keuntungan. Seperti peluang untuk
menanamkan saham.
• • Sedangkan dalam bidang industri, statistika sering digunakan untuk
menentukan keputusan. Contohnya berapa jumlah produk yang harus
diproduksi dalam sehari berdasarkan data historis perusahaan, apakah perlu
melakukan pengembangan produk atau menambah varian produk, perlu
tidaknya memperluas cabang produksi, dll.
Jadi, statistika sebenarnya sangat penting bagi kita, dapat berguna dalam
menentukan keputusan meskipun kadangkala penggunaannya tidak kita sadari.

9. Result of our Survey
• After we survey to 7A class, we ask them with
some question and after that, we collecting the
data. and this is the result

12. Lets us discuss the topic
• From 29 (absen 3) student in the 7A class, we find
the answer and we make a frequency table like this :
Vehicles Frequency
Mobil Jemputan 5
Motor Pribadi 6
Motor (Diantar
Orangtua)
10
Mobil (Diantar
Orangtua)
2
Becak 3
Sepeda 0
Kendaraan Umum 0
Jalan Kaki 0

13. vehicles used to go to school (use pie
diagram)
Mobil jemputan
Motor pribadi
Motor (Diantar
orangtua)
Mobil (Diantar
Orantua)
Becak
Sepeda
kendaraan Umum

14. to find mean, mode and median. We
need some formula :
• Mean = sum of all values : number of the
data
• Modus : by looking the frequency
• Median : by looking the middle of the data
after we ordered

15. Lets find the answer !
• Mean = 26 : 8 = 3,25 = 3
• The Modus is = Motor (Diantar Orangtua) about 10
students
• The Median is = (13 & 14) Mobil Pribadi (Diantar
Orangtua)

16. not only asking about vehicles
used to go to school, but we ask
other question too

17. extracurricular activities they
are interested
okay, this is the table frequency about
their interested on extracurricular
Type of
extracurricular
badminton I
C
T
Football Basket English Scout Lainnya
Frequency 8 3 4 4 2 3 2

18. And this is the diagram
0
1
2
3
4
5
6
7
8
9
1
Chart Title
Series1
Series2
Series3
Series4
Series5
Series6
Series7
Series8

19. So the mode, mean and median
is.......
• Mean = 26 : 7 = 3,7 = 4
• Mode = badminton (about 8 student interesting
with it )
• Median = (13 & 14) Football / Basket

20. Their
elementary
school Elementary School From Frequency
SDN Margadadi III 5
Margadadi VII 2
Margadadi I 2
Karanganyar I (Kelas jauh) 5
Lainnya 12

21. Mean, Mode and Median.....
• Mean = 26 : 5 = 5,2
• Mode = Lainnya (about 13 students)
• Median = (13 & 14) Karanganyar I (Kelas jauh) /
SDN Margadadi III

22. And the last, about their interested
lesson
Lesson’s Name Frequency
Mathematic 7
History 2
English Language 8
Japanese Language 6
Lainnya 3

23. Mean, Mode and Median
• Mean = 26 : 5 = 5,2
• Mode = English Language (about 8 students )
• Median = (13 & 14) mathematic

24. • from the observation that the results are
different from each other and not much the
same. but even so we should stick to the
establishment of Indonesian nation that says
"Different but one also“ yang artinya “berbeda-
beda tapi satu jua”
• Terimakasih dan wassalam!!!! 

25. Thanks For Your Attention, we
hope you will agree with our
presentation, the last we say
Wassalamu’alaikum Wr Wb