Monday, June 19
Good examples in class today with the different levels of measurement & way to go Matt with the bullseye reliability/validity example. To review, the key topics of the day were:
1.) Levels of measurement
2.) Random factors and Systematic factors make up measurement
3.) Types of Error
4.) Different ways to check reliability
5.) Different types of validity
Question for thought- In class, when we discussed the test- retest method for reliability, I mentioned how it is not used very often. Think of a situation with a questionnaire when you think this method would be practical.
1.) Levels of measurement
2.) Random factors and Systematic factors make up measurement
3.) Types of Error
4.) Different ways to check reliability
5.) Different types of validity
Question for thought- In class, when we discussed the test- retest method for reliability, I mentioned how it is not used very often. Think of a situation with a questionnaire when you think this method would be practical.
posted by Dr. Jeffrey Bolt at 10:18 AM
1 Comments:
If a usability and effectiveness questionnaire was given to users of a new product, a re-test may be helpful because of all of the random factors that can cause error. For example if the product was bug spray, in one instance the product may have worked, but in a different location, the spray might not be as effective. This would be taken into consideration if a re-test was done. Therefore when there are numerous factors that could cause error or inconsistancies, re-tests would be helpful. (Emily Casane)
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