1. Organize data in tables and graphs
1.1 To display data

2. What is statistics?
Is the study of how to collect, organize, analyze, and interpret data.
We use data to:
Make decisions,
Develop and implement policies.

3. Who collects data and what do they do with it?
Businesses collect data on their products and on consumer behavior.
Real estate agents collect data on market trends and on the availability of certain types of properties.
Doctors collect diagnostic data on their patients. (i.e to identify the appropriate treatment for a patient)
Police collect data on criminal behavior and the frequency of certain crimes. Etc…etc…

4. What is data?
Data is a collection of facts, such as numbers, words, measurements, observations or even just descriptions of things.
There are two types of data: qualititative or categorical and quantitative or numerical.

5. Let’s Practice- qualitative data or quantitative data???
Your friend’s favorite holiday destination.
Your teacher’s height
The most common names of your generation.
Customers in a shop.
The name of your classmates favorite teacher.
The average student per teacher at your school.

6. One Variable Data Displays
Bar charts
Histograms
Line graphs
Circle graphs
Stem-and-leaf plots
Box-and-whisker plots

7. Data Displays need to know…
What is the difference between a bar graph and a histogram?
What is the difference between a line graph and a line plot?
In a box-and-whisker plot, what is the five-number summary?
How do you calculate the median?
How do you calculate the IQR?

8. Something to keep in mind…
If data:
Then use
Is organized into categories
Bar graphs/double bar graph
Changes over a period of time
Line graph
Compares categories to whole set
Circle graph

9. Please read and answer all questions on worksheet practice B.
Let’s get to work!!! Extra resources:
Please read and answer all questions on worksheet practice B.