Questions tagged [survey-sampling]

Creating samples from a well-specified population (human: all adults; registered voters; individuals with diabetes; students of a university; establishment: all firms; firms with employment of 200 or more in New York City; resource: all land of a country or a state/province) using a probabilistic method, with the purpose of inference to that specific population

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Unbiased estimator of population variance for sampling without replacement

What I wrote below only apply to the situation where we have finite population. I saw many of my friends used sample variance with Bessel's correction $\frac{\sum_i^n (X_i - \bar{X})^2}{n-1}$ to ...
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-1 votes
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How do I obtain a random sample of married individuals on Facebook? [closed]

I'm an undergraduate student with an assignment to answer the question of whether husbands are usually older than their wives. I've never done a project like this, so I'm unsure of how to form a ...
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1 vote
1 answer
38 views

How to resample members from the population who didn't respond after the survey?

I have used stratified random sampling on population to generate the sample. Now the issue is if after the survey is conducted some of the members in the sample ...
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Sampling population to replicate another population

Disclaimer: This question is quite general and I assume there are multiple answers equally valid, and at this point I have no a priori opinion on what is "similar" population so everything ...
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How to check if the sample represents the population data?

The below table is similar to the population ...
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Is this weighted sample mean unbiased for the weighted mean?

For a sample $s$ from a population $U$ chosen under a sampling design $p(s)$ inducing weights $w_k=\frac{1}{\pi_k}$ where $\pi_k$ is the probability of inclusion. Define the sample weighted mean like $...
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Repeated Systematic Survey Design with double sampling using Survey package

I am new to the Survey Package in R and am unsure on how to correctly code the design. I have a repeated systematic design. Transects are placed systematically and there are 3 random starts (for 3 ...
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Why do sampling designs with variable sample size suffer from greater variance of the HT estimator?

I am following the reference Model Assisted Survey Sampling by Särndal. In chapter 3 we are introduced to the Bernoulli sampling and calculate the Horvitz-Thompson for the population total $Y_U$ of ...
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Comparing survey multiple choice survey questions response percentages between a subset's responses and the total collected responses

I have a survey composed of multiple choice questions. Several distinct branches of the same organization responded to the survey. I want to see if the distribution of answers from one branch is ...
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Determining correct survey degrees of freedom for replicate variance estimators

Question: Recently the survey package in R adopted a clever new way to estimate the degrees of freedom for replication variance estimators: calculate the rank of ...
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1 answer
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How many sets of variables do I need to assess all pairwise correlations in a planned missing design

I have 54 variables that I need to correlate, but due to constraints I can only put up a maximum of 16 variables at a time for data collection. At the end of the day, I need estimates of the 1,431 ...
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1 answer
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Survey response frequency doesn't match the population distribution

Let's say I ask 1,000 people a survey with 10 questions. Of these 1,000 people, 50% were men and 50% were women The number of responses, however, were as follows: Men: 100 (66.6% of responses) Women: ...
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Questions on Data Quality Assessment

I have been bumping my head against wall in trying to figure out a good real-world solution for this challenging problem that my friend asked me. Could you please give some pointers? Lets say we want ...
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How many variables for a recommender system?

I'm creating a survey for 60 people. I'd like to measure their music, tv-series and purchasing tastes. The survey will show a number of songs. People will be asked to say if they like it (1) or not (0)...
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2 votes
1 answer
397 views

Is a "trimmed" simple random sample still a simple random sample?

Suppose I have a population of size N (N is large, say a million), and I take a simple random sample of size 100. Denote the units in the sample as $u_1$, ... $u_{...
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How do you sample without a sampling frame?

I want to research the returns to education in my city as well as assess whether people who have studied abroad on average earn more than those who have studied within the country. The data required ...
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1 answer
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Estimating Population mean given a sample, and the population size

For my study, I have population size known (in order of millions), and a sample data (about 30 sample size). I can estimate population mean using 95% confidence interval by t distribution or normal ...
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How to weigh data points to match multiple dimensions?

I am trying to match the results of one survey to another. I would like sex and age to match, so first, I weigh each datapoint to match the distribution of male/female. However, when trying to weigh ...
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Detecting Hosting companies

I am conducting research where I have a list of "ranges" which may or may not host websites. If a range has many websites there is good chance that the overall company may be a hosting ...
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What is the effective sample size in conjoint experiments?

I am running a conjoint forced-choice survey experiment. The idea is to interview 500 respondents, that will perform 5 choice tasks choosing between 2 profiles. Profiles are fully randomized. My ...
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How to calculated weighted proportion for a binary variable

I have a dataset with 100 samples of a PPS survey, and the outcome (y) is a binary variable (Y/N). I've calculated the weights for each sample, and I'm wondering how to calculate (formula) the ...
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1 vote
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Nonresponse weight adjustments in multi-stage household surveys

I have a question about nonresponse weighting in complex sample surveys in multi-stage designs, like say, The US National Comorbidity Survey Replication (NCS-R), the Health and Retirement Study (HRS), ...
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Estimating the size of a population. Is the method employed valid?

Context: in North America there has been a Drug Overdose Epidemic for several years. In my own municipality, more people have died of overdose than of COVID during the pandemic. My workplace (a non ...
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Base weights/Relative weights when sampling strata change

I have survey responses from a survey where the sampling plan was stratification with sampling rates proportional to the square root of the number of households. The plan created 12 strata, and the ...
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Using chi square test to determine representativeness of sample drawn from known population

I am trying something out of my comfort zone and would appreciate any help provided! I have used census data to identify the frequency of age brackets in my town. I then sampled about a thousand ...
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2 votes
1 answer
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How is the asymptotic justification of the "linearization by influence function method" for surveys established?

The survey R package recently adopted the "linearization by influence function" method of estimating covariances between domain estimates. The central ...
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Comparison between weighted and unweighted surveys

I was hoping to get your take on comparing the results of a weighted survey with an unweighted survey. I have the results of two different surveys conducted in my state. Survey A was a multi-stage, ...
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Survey sampling: are these 2 options the same?

I want to show the impact of a communication campaign on people's understanding of a specific topic. My question is about sampling. Let's assume we will measure the impact of the campaign by running a ...
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Comparability vs Representativeness: Comparing weighted & unweighted personnel surveys YOY when populations changed?

I am looking at designing a personnel survey and the aim this year is to apply weights to the survey to make sure that the results are representative of the population of all employees. The survey ...
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1 answer
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Sample Size determination at coutry level or states levels

A country is stratified into states. A researchers wants to carry out a survey with a main requirement of state level data representation. I wonder if sample size should be determine using country ...
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2 votes
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Using a sample of paid survey respondents to bias correct lower response rate among larger non-paid sample

I'm running a tracker survey on a website that has a low response rate of about 2%. The survey is not incentivized but the website traffic is large enough in volume I can always meet my sample target ...
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Book on probability proportional to size sampling

Can anyone please suggest a book to study probability proportional to size sampling with and without replacement and all its details ? Thank you
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Horwitz thompson estimates

Let U = (1, 2, 3, 4, 5, 6) be a finite population of size 6. Let $\ S_d $ = {($\ s_1 = (1, 2), \ s_2 = (3, 4, 5), \ s_3 = (1, 2, 6), \ s_4 $ =(3, 4, 6)} be the support of the design. Let P($\ s_i $) = ...
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Lahiri method of selection with replacement

Show that in lahiri method , the average number of draws to select one unit is $\frac{M}{\mu} $ bar where M is maximum of sizes for $\ x_i $ (i= 1,1,3....) and $\mu $ is $\frac {\sum_{i=0}^{N} \ x_i }...
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3 votes
1 answer
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How to show that $\pi^*_i \pi^*_j - \pi^*_{ij} = \pi_i \pi_j - \pi_{ij}$ in a probability sample?

Let $\pi^*_i \quad i=1,2,\dotsc, N$ be the probability of not including the $i$th unit in the sample and let $\pi^*_{ij} \quad i, j = 1, 2,\dotsc, N$ be the probability of including neither the $i$...
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1 vote
1 answer
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Survey sampling: How many participants per group (current, former, and potential users) should we recruit?

We are designing research in which we will explore the perception of users (C current, F former, and P potential) on a product. We apply the same questionnaire for each group adapting (verb tenses) ...
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0 votes
1 answer
58 views

Calculation of survey weights when some respondents are certain to be selected

I am helping with the design of a household survey which will use a four-stage sampling process, and I am unsure how to account for some elements of the population being selected with 100% probability....
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What interval should I use to describe the variation caused by the randomness in stratified random sampling?

I have a population with n individuals. I decide that stratified random sampling is appropriate and I randomly survey a single individual in each strata, ultimately surveying ...
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Do survey sample standard errors take into account/correct for anything else besides finite population?

Regular standard errors are biased when the data comes from a survey sampling design. The article "Wait Wait, Don't Tell Me... You're Using the Wrong Proc!" explains that the bias is due to ...
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Sample size of a vote transfer poll

A vote transfer poll asks the electorate about how they voted in the last election and how they would vote if the next election was now. With the result from both questions one could build a matrix of ...
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1 vote
1 answer
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Specifying the survey design correctly in the R survey package

I have the results from a survey where a geographic area was stratified and power allocation (using the number of households in each stratum) was used to determine the number of surveys to send out to ...
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Need help on running sample data analysis -

Background: I have a survey data for a year 2019 where I received 50% response rate. I wanted to compare it with 2020 data which has 65% response rate. Question being asked in the survey is to rate ...
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1 vote
1 answer
54 views

Sample size for two-staged cluster sampling

I have a question about the R-package samplesize4surveys. I want to calculate sample size for tests of difference in proportions in a two-step clustered sampling ...
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1 vote
1 answer
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Reconciling sample size calculations using Cochran's formula and Wald test

This is quite a basic question but I could not find a clear answer elsewhere. If we wish to draw a simple random sample to determine the estimated proportion of an attribute in the population, given a ...
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0 votes
1 answer
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Why do you only need to identify the first cluster level in svydesign(), even if you have multi level clustering?

Going through the a course on Survey Weights and it says that even though a dataset may sample using 3 clusters (like Counties, City Blocks, and households), you only need to specify the first level ...
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Can I make conclusions with two independent samples?

Suppose I have a sample (n°1) that is statistically representative of a country A population, that I randomly selected. I want to give a survey to that sample to infer some things about the true ...
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2 answers
339 views

Sample size needed for a survey with multiple questions

I want to make a survey with several questions and conclude those results for the whole population. For example, I want to estimate the following questions for my 1 million population : "do you ...
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1 vote
0 answers
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ICC for cluster within cluster (survey package R)

So I'm not quite sure about the terminology but what ever it's called the actual scenario is straight-forward. I'm dealing with a two-stage cluster sample. It's also stratified but let's set that to ...
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1 answer
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Matching a Subsample with Complex Survey Data

I am completing a study to analyze the effects of a policy treatment on a sub-population of adults (low-income adults, specifically) that are represented in a complex, nationally representative survey....
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1 answer
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How to operationalize stratified, cluster survey sample “standard of the mean” in Excel

I have a question on the analysis of complex survey design. Basically, I am trying to replicate the SAS Surveymeans procedure in Excel in order to understand how to operationalize the equations to ...
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