Presentasi ini adalah mengenai apa itu statistika, pengertian populasi dan sampel, sampai berbagai tingkat data.

1. AN INTRODUCTION

2. TIGA JENIS KEDUSTAAN
(Disraeli, 1804-1881)
Dusta
Dusta besar
Statistika

3. SAJAK W. H. Auden
“Jangan duduk dengan seorang ahli statistika …
Atau mempercayai ilmu sosial …”

6. IMPORTANT TERMS (1)
Statistics: the science of collecting, organizing,
presenting, analyzing, and interpreting data to assist
in making more effective decisions.
Descriptive statistics: methods of organizing,
summarizing, and presenting data in an informative
way.
Inferential statistics: the methods used to estimate a
property of a population on the basis of a sample.

7. IMPORTANT TERMS (2)
Population: the entire set of individuals or objects of
interest or the measurements obtained from all
individuals or objects of interest.
Sample: a portion, or part, of the population of
interest.

8. LEVEL OF data
Nominal
Ordinal
Interval
Rasio

9. PROPERTIES OF NOMINAL LEVEL
DATA
The variable of interest is divided into categories or
outcomes.
There is no natural order to the outcomes.

10. PROPERTIES OF ORDINAL LEVEL
DATA
Data classifications are represented by sets of labels
or names that have relative values.
The data classified can be ranked or ordered.

11. PROPERTIES OF INTERVAL LEVEL
DATA
Data classifications are ordered according to the
amount of the characteristic they possess.
Equal differences in the characteristic are represented
by equal differences in the measurements.

12. PROPERTIES OF RATIO LEVEL DATA
Data classifications are ordered according to the
amount of the characteristic they possess.
Equal differences in the characteristic are represented
by equal differences in the measurements.
The zero point is the absence of the characteristic and
the ratio between two numbers is meaningful.

13. Pertanyaan:
Apakah benda seberat 60 kg dua kali beratnya benda
yang seberat 30 kg?
Apakah benda yang suhunya 600
C dua kali panasnya
benda yang suhunya 300
C ?