Ch1_Introduction to Statistics

# Ch1_Introduction to Statistics - Introduction to statistics...

This preview shows pages 1–9. Sign up to view the full content.

Introduction to statistics

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Statistics is the language of the science  method Used to design, conduct, and analyze  scientific research
Variable variable  is any environmental condition, event, personal characteristic, or behavior that can take on  different values . =

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Independent Variables Independent variables  (IV) are manipulated  by the experimenter to determine their effect  on the dependent variable. Independent variables can be quantitative or  qualitative . HINT: This is the cause.
Dependent Variables Dependent variables  (DV) are not under the  experimenter’s control. Dependent variables depend on the  independent variable. Dependent variables are usually quantitative. HINT: This is the effect.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
History Quetelet  (1796-1874) was  a Belgian professor who is  regarded as the father of  social sciences. He was the first person to  identify regularities to  describe an “average”  person. I am the father of social  sciences.
Data Data  are scores or measurements that are  collected from observation of people or  animals. Example :  Age of students in a class: 19 24 20 22 21 33

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Statistics  are  methods  used to summarize,  analyze, and make sense out of collected  data. A statistic  is  a single number  used to  describe a set of data from the sample. QUESTION: Can you tell the difference?
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 11/30/2009 for the course HP 400m at USC.

### Page1 / 26

Ch1_Introduction to Statistics - Introduction to statistics...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online