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3 votes
1 answer
58 views

Would withholding marks until students respond to a survey bias the responses?

My university is running an anonymous survey, mostly to check if we understand how we are going to be assessed, if we are comfortable with the material, and if we find the material well organised. ...
Porter's user avatar
  • 33
0 votes
1 answer
21 views

Population bias in survey leading to inaction

This isn’t exactly an academic statistics question, but it is a real problem that I’m trying to understand with regards to bias in survey statistics leading to issues in real-world decision making. I’...
Concerned Sampling Person's user avatar
1 vote
0 answers
212 views

Non-response bias and margin of error for product feedback

If 1,000 people received a household product and later they were emailed a survey asking for their feedback, how would you avoid non-response bias? As an example, the survey would ask them to rate the ...
David Ingledow's user avatar
1 vote
0 answers
35 views

Missing data are biasing sample

I'm working with a sample of 1,222 survey respondents. Given the length of the survey, many respondents did not complete every question. After removing observations with missing data, I am left with ...
user203325's user avatar
3 votes
1 answer
746 views

Can be Replacement a Way to Deal with Nonresponse?

When I've asked a teacher (in the past) about how could I handle, in a survey with simple random sampling, the participants I couldn't reach for some reason, he told me that I could use a pre ...
Ágatha's user avatar
  • 173
1 vote
0 answers
150 views

Sampling (Horvitz Thompson Estimation) Variance Estimation

If the second order inclusion probability is zero for any 2 units in the population, will the yates-grundy-sen variance estimator of the H-T estimator have infinite bias?
NoIdea's user avatar
  • 85
2 votes
1 answer
490 views

Conceptual definition between randomness, representativeness and bias in sampling

I was wondering if you can help me clarifying some concepts (if it is possible providing references to papers or books) that I will write in the form of ideas rather than questions. Consider this ...
Mario GS's user avatar
  • 173