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Can the wording of a question create response bias?
Bias Type: response (misleading ?s)
Why I chose topic:
Interesting to see how PHS students felt about uniforms.
Population of Interest:
PHS students
Sampling Frame:
40 PHS Students in various 2nd period study halls
To obtain subjects:
Went to 2 second period study halls and picked
10 girls and 10 boys from each one.
Randomness:
I randomly decided which study halls to go to. I also selected those 10 girls and 10 boys from each study hall randomly.
I also randomly selected each person to get a certain question.
I can conclude that PHS is almost split on the approval or disapproval of uniforms. I can also conclude that the wording of the question can create response bias. I had almost 20% more people agree to uniforms when the question was biased towards uniforms.
Types of Individuals:
Any PHS student with a second period
study hall. There was a wide variety of
grade levels, intelligence and interests.
Factor: The survey question being unbiased or biased towards uniforms.
Treatment: 20 students (10 boys, 10 girls) received the biased question and 20 students (10 boys, 10 girls) received the unbiased question
Response Variable: If the opinion of uniforms changed when the question was biased towards uniforms.
Design: Blocked
Why?? I went to two different study halls and then chose 10 boys and 10 girls from each study hall. From this selection 5 boys and 5 girls got the biased question and the other 5 boys and 5 girls got the unbiased question. I blocked by study hall and then gender, while randomly selecting the people in each block.
Problems: One study hall did not have 10 boys and 10 girls, I had to survey 12 girls and only 8 boys instead of the planned 10 and 10 from each study hall.
Next Time: I would not have just surveyed second period study halls, I would have randomly surveyed people in the halls. I also would not have put as much emphasis on whether I was surveying boys or girls.
What did I learn? I learned that the wording of a question can create response bias. I also realized that creating a survey, surveying and then collecting results was not as easy as one might think. This experiment could should administration how students feel about uniforms and teach others
how the wording of a question can change
the responses of the people being
surveyed.
Blind: I knew which treatment the subjects were getting, whether they received the biased question or the unbiased question. However, the subjects did not know which question they received, they were only told they were taking a survey and that they were to answer the question.
Typically PHS students were split 50/50 on this issue, but when I changed the wording of the question and made it biased towards uniforms it was split 65/35 in favor of uniforms.