1. (or why should we learn this stuff?)
Statistics
What is it?
Who needs it?
(or why should we learn this stuff?)
AP Statistics
South High School

2. What is Statistics?
Statistics is the science of collecting, summarizing, and analyzing data.
Statistics helps us to understand the variability and uncertainty of our world
Statistics gives us the tools to make informed decisions from data about our world

3. Statistics are valuable in a variety of fields such as
Who needs statistics?
Statistics are valuable in a variety of fields such as
Medicine
Government
Education
Agriculture
Business
Law

5. Descriptive
Provides summaries of data in:
Graphical form

6. Descriptive Summaries can also be numerical Mean = 18.4 Minimum = 11
Standard Deviation = 2.3
Median = 17
IQR = 6.5
Maximum = 26.5
Proportion = 7/26

7. Inferential
Set of procedures that allow us to draw inferences about a population from a sample
Two Methods
Confidence
Intervals
Hypothesis
Testing

8. Confidence Intervals
Method that allows the researcher to estimate a population characteristic using the data obtained from a sample
Researcher chooses both the level of confidence and precision used in calculating the estimate.

9. Hypothesis Testing
Method that allows a researcher to determine the probability of a sample producing a characteristic value given empirical information.
Method that allows a researcher to compare groups to determine if differences exist.

10. Statistics
Statistics is a mathematical science pertaining to the collection, analysis, interpretation, and presentation of data

11. Regardless of the field you choose to work in, you will be a consumer of information.
This means that we can all benefit in understanding more about the statistics that are used in many fields every day.