# A random sample of 5,000 people is selected from local telephone book to participate in financial planning survey to help infer about typical saving and spending habits. three thousand return the questionnaire. Describe the types of bias that may result in at least 4-5 complete sentences.

A random sample of 5,000 people is selected from local telephone book to participate in financial planning survey to help infer about typical saving and spending habits. three thousand return the questionnaire. Describe the types of bias that may result in at least 4-5 complete sentences.
You can still ask an expert for help

• Questions are typically answered in as fast as 30 minutes

Solve your problem for the price of one coffee

• Math expert for every subject
• Pay only if we can solve it

iljovskint
According to the given information, a group of 5000 people is randomly selected for the financial planning survey and the questionnaire is sent to each of them. Among 5000 people selected for the study, only 3000 submit their responses through questinnaire.
In survey research, when the participants who are included in the study/sample do not respond, the non-response bias occurs.
Here, out of 5000 people randomly selected for the study, only 3000 people responded, and the remaining 2000 people fails to respond. The absence of responses from such a large number of people will result in nonresponse bias in the study.
There are many possible ways for which the people in the sample refuse to participate in the study:
People selected in the study cannot be contacted.
People selected in the study refused to give a response.
People forgot to return the questinnaire.
Poor constructed surey.
The nonresponse bias cannot be eliminated completely, but there are some ways by which it can be reduced:
Try to contact the person through reminders.
Introduced incentives for completing the survey.
Ensure confidentiality.