Designing a Study Ch 11 1 S Definitions

Designing a Study Ch. 11. 1 S

Definitions S Statistics is the practice or science of collecting and analyzing numerical data in large quantities, especially for the purpose of inferring proportions in a whole from those in a representative sample. S The population in a statistical study is the complete set of people or things. S The sample is the smaller set of the population from which the raw data is obtained. S A misrepresentation of members of the population is called bias.

Basic Steps in a Typical Statistical Study

Types of Studies

Examples of Bad Questions S Please indicate how much you agree or disagree the following statement about Madison High School. I feel welcomed by the staff and students. S Fire drills are hard to have during class time. Do the fire drills help you feel prepared for a real fire? S Much More prepared S Slightly more Prepared S Somewhat Prepared S Not more prepared S Does it seem possible or does it seem impossible to you that advisory has gotten even more boring? S Very possible S Possible S Impossible S Very impossible S Would you be willing to attend an assembly every once a month on resumes if it increased your lunch time?

General Tips S Identify what you want to know S Remove “wouldn’t it be nice to know” questions S Know how you will use and present the information S Remove questions for which the respondent will mot have immediate assess to the information S Remove questions that the respondent will not be willing to answer

Write a appropriate question/s. S You want to open a new food place here in Rexburg, Idaho. S You have a new car picked out, however, you have heard that some colors get pickup by the police more than others. S You want the school to create a new _____ class. S In a group of two or three, think of some data you want to collect from the students at Madison High School. Write a survey question/s. Once you have your question have another group read it to make sure it is unbiased.