1. STATISTICS
BY LISA BUDI RAHAYU

2. The Definition of Data
Statistics is the science of collecting data, analyzing, interpreting or explaining, and presenting data.
Stage in a Statistical Investigation
Identifying the problem.
Collecting Data
Studying Data
Drawing conclusions and making decisions.

3. Collecting Data Methods of data collection Counting
Measuring (observation, survey, questionnaires)
Data recording (by tallying)

4. Student’s activity
Collect the data on the shoes number of your classmates!
Collect the data on the birthday of your classmates!
Collect the data on the parental occupation of your classmates!

5. Sorting data (single data)
Find the highest and the lowest value from the data:
5,4, 7, 3, 2, 3, 3, 4, 6, 5, 6, 9, 8, 4, 8, 5, 7
X max= …
X min = …
Range = …

6. Sample and Population
To find out the taste of a soup in a pan, we only need a spoonful of it, in this case:
The whole soup in the pan constitutes a population
A spoonful of soup taken constitutes a sample

7. So what is the difference between population and sample?

8. Population is all the objects being studied
Sample is a part of population being
studied or observed

9. Statistical Presentations
We use graphs to represent statistical data
A graph is a picture representing a set of information

10. The types of graphs Pictograms (or pictographs)
Bar charts and pie charts
Line graphs
Dot diagrams
Steam and leaf diagrams

11. Please make a group of two then summarize about the types of graphs from cambridge book and math count 3 !

12. THANK YOU… HAVE A NICE DISCUSION!!!