A city welfare services department wants to get a good description of parenting

Question

A city welfare services department wants to get a good description of parenting styles among parents. It feels that this will help it in assessing “problem” parents and foster parents. For a sampling frame, it gets a list of the parents or guardians of all public school students and their telephone numbers. It plans to sample randomly from that list and conduct a telephone survey.

a) To what population would this survey generalize if there were a 100% response rate? How does that compare with the population desired? Describe any coverage bias and why it occurs.

b) What real-world factors will interfere with the generalization to even the study population? Create a path diagram for the propensity to respond that you can use to predict the type and extent of nonresponse bias.

Explanation / Answer

To what population would this survey generalize if there were a 100% response rate?

100% response rate indicates all the parents that are selected randomly for study give their response about their parents. This includes normal and foster parents. The population would be at sufficient level say survey is conducted for 10 schools each having 500 students of all age groups. The population should be more than 100.

How does that compare with the population desired?

This compares that population desired for carrying Z test which actually gives results of parenting needs many 100s of people which is satisfied in our survey if above 10 schools randomly are selected.

Describe any coverage bias and why it occurs

There are many economical groups or levels of schools which when particular type of schools like poor or unfacilitated schools are taken for study which creates bias in study. The students from poor schools may adopt children poor practises of parenting and may think to get them into work as quickly as possible

What real-world factors will interfere with the generalization to even the study population

while conducting the sampling randomly, there is high chance of selecting parents with bias those having similar type of parenting. Also one more important observation is that, responses from parents may not be 100% reliable to validate parenting style. This survey needs to conducted to child too

Flow chart for predict the unbias

select a school -- take 100 parents randomly --- take responses

If the responses are unbiased (good and bad appromiating each other) ---- proceed to next school

If the responses are biases --- [ It indicates those particular school have most of the parents with either good ort bad parenting] (may be bias due to school selection] -- now take one more sample from same school --- If the study continues to be biased, We can declare the type of parenting for the school students --- proceed to next school

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