Refers to an instrument used to collect a sample from a population. Surveying often refers to sampling of human populations and is primarily done by administering questionnaires or interviewing individuals. Sampling individuals for surveys in stratified populations may require more complex sampling ...

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Paired test (non-independent) for rank order data

I have responses from a survey with questions where respondents were asked to rank their top 3 choices from a list of 8 choices. An example of the type of question would be to rank their top 3 methods ...
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24 views

Missing Data (mice) and Survey Package r

First, I am new to analyzing public opinion polls and the r package "Survey". I would like some advice. I am running a regression model with weights from a Pew survey, however, I noticed that a ...
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12 views

Use of data not captured in a survey for survey glm model

A former statistician in my organization carried out a survey to understand customer satisfaction using stratified sampling. On arriving at the organization, I was interested in seeing how variables ...
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21 views

Questionnaire data analysis. Correlation between a model and questionnaire data

Kind of a newbie with data analysis here, and looking for some guidance. I've made a questionnaire in relation to a model regarding the security of certain software. The questionnaire is mostly made ...
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34 views

SEM with categorical complex survey data adjusting for cluster effect

My data comes from a two stage stratified cluster sample. There are some categorical (ordinal) manifest (dependent/endogenous) variables. I believe these variables can be divided into three major ...
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10 views

Chi squared test on multiple survey responses?

I have completed a questionnaire using a variety of categories (i.e. some questions are yes/no, some are a different categories etc.). I want to find out whether there is a relationship between age ...
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20 views

Exact Confidence Interval for Proportion Estimated with Cluster Sampling

Can anyone suggest a reference that discusses how to calculate an exact confidence interval (i.e., does not use the normal approximation) for a proportion estimated from a single stage cluster sample ...
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10 views

Calculating age-adjustments for column percents

I am having trouble understanding how SUDAAN calculates adjusted column percents and I'm hoping someone can explain. Let's say I have 3 variables, gender(M/F), happyness (binary happy/sad), and age ...
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18 views

Regression on Survey analysis across 50 states

I ran a survey across all 50 states in the US. The goal is to see if there is a correlation between people's love for the state and the population growth % over 5 years. The survey has 15 questions - ...
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11 views

Between regions effect in my pooled regression model. How to define it?

I have cross- sectional survey data with one record for each respondent and clusters at regional level. I want to assess the correlates of a specific type of expenditure and I am running a ...
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43 views

How can I determine whether a change is statistically significant ONLY based on confidence intervals and points of estimate?

The table above shows the proportions (%) of a given country's population that have experienced theft from vehicles each year along with respective confidence limits. How can I tell if a change ...
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1answer
23 views

Determining 95% confidence interval of difference for proportion (Stata, or other)

I have a dataset that is looking at completeness of data entry in a survey in two populations. Variables represent each category and are allocated 1 (present) or 0 (not present). I was wondering how ...
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14 views

Which statistical test (2 x 2 x 2 three way factorial design, splitted dependent variable)?

I have data collected via a survey and the study is a 2 x 2 x 2 between subject design. For the dependent variable I asked two questions so that it is a split DV = DV_1 + DV_2. My question is, which ...
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5 views

Implementation for Association Rule except market basket analysis and medical

I wanna make application and the toool analysis is Apriori and apriorihybrid. But, this application is used to be in data census and survey. How to implement it in that data. because we usually use ...
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1answer
9 views

Standard effect size for assuming equal means

I do a community survey on a website once each year, I have data from the past two years and this year I'd like to remove questions which are getting similar answers each year. The survey questions ...
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17 views

Research Design Strategy

The total number of participants in a study is 70. This sample is divided into two groups. Group A (35 participants) and Group B (35 participants). The purpose of the study is to investigate the ...
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16 views

number of questionnaires and sample size

Is there any correlation between number of questionnaires used in a study and the sample size in order to obtain accurate measurement?
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12 views

How to calculate Wald Chi-squared test for contingency table

I am trying to understand the documentation from SAS concerning the Wald Chi-squared test for contingency tables via the surveyfreq procedure. Specifically, I am ...
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1answer
31 views

Cluster-robust SE in Stata when using a survey design

I'm working with data from a clustered sample where observations have a certain sampling weight (pweight). There are two ways to obtain the correct point estimates: I) using reg yvar xvar [pw = ...
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1answer
40 views

Text Classification for (Short) Open-Ended Survey Responses?

I am new to text mining/classification, and really want to learn more from this community. My data are open-ended survey responses (n=about 6,000) in which the respondent described what happened at ...
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11 views

Weights in convenience sample

I am using the MarketScan data, which is a convenience sample. It provides a set of sample weights for analysis, which are computed for sample estimates to scale up to the total population with ...
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29 views

Having problems with big weights with non-respons in survey

I would like to take weights of non-respons in to account when calculating SE in my survey. Here is an exemple of what I would like to do and I have tried to use the survey package in R. (fpc in the ...
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36 views

Hierarchical Wilcoxon signed-rank test?

I have a small number (<10) surveys given to a small number of respondents (<10) before and after a program of instruction. The survey responses are on a Likert scale, and the results of all ...
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1answer
28 views

Standard error on an estimate derived from 2 estimated proportions - Survey data

I have survey data where I want to calculate a derived variable, based on 2 estimated proportions. (e.g., "Did you visit the web-page?" If Yes, "Did you place an order?", and I want to estimate total ...
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33 views

Appropiate analysis for simple survey dataset with Y/N answers

I'm searching for the most appropriate and simplest analysis to statistically test for differences among 3 groups ("Type1", "Type2", "Type3") of individuals (N=75) according to their answers to a set ...
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12 views

Using R to calibrate model probabilities back to the full US population after down sampling

I am using the survey package and my model is: ...
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51 views

Calculate confidence levels of a stratified sample with missing units

I'm conducting a stratified survey among health institutions; 700 units were allocated into one of the 30 strata designed to reflect the proportionality of the population. However, it's been difficult ...
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21 views

Hypothesis analysis. How to write the claim mathematically and identify H0 and Ha?

I had to do two surveys for a project: one in the city centre of my city (targeting:visitors/residents) and the other one in a residential area (targeting:residents) asking if they agree or disagree ...
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9 views

Better way to trend customer satisfaction surveys?

Thanks in advance for your help answering this statistics related question: I am working with a company who wants to continuously improve customer service. To gauge how well they are doing they ...
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13 views

Why must the first stage be sampled without replacement to get nonzero variance in the second stage?

On page 5 of the Stata's manual on survey variance estimation, the following claim is made: All but the last stage must be sampled without replacement to get nonzero variance components from ...
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19 views

Data mining for non-independent Data, in general?

Do most statistical learning or data mining methods assume that the observations are independent from each other? For example, for classification trees and the CART algorithm, while economists (e.g., ...
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20 views

Optimize Number of Possible Choices in Survey Question

I'm interested in asking a survey question ("How did you hear about us?") to people that visit a website. I'd like to have it be multiple choice, but since there are many different sources (referral, ...
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28 views

Error in segmented regression: Only 1 datum in an interval

I am attempting to perform a piecewise/segmented logistic regression on survey data using this tutorial as my basis. I have data for the period 2006 to 2013, however 2012 is missing. The analysis ...
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21 views

How do I assess correlation between ordinal responses to multiple survey questions

I have survey data on whether ~500 respondents would accept a hypothetical medical procedure in variable circumstances. Responses are graded 1 - definitely yes ; 2 - probably yes ; 3 - probably no ; 4 ...
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15 views

Is there a proper interpretation of ordered multinomial variables in binomial Logit model?

I am using a binomial Logit model to make inferences about how respondents of a survey use the Internet based on differences in their financial well-being and income. My dependent variable measures ...
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25 views

Combining ordinal multi level (multivariate) indicator variables into one variable

I have a single variable ,for example call it Quality (var x). It contains 2 indicator variables in it ; Efficiency(x 1) and usability(x 2). with each also contains indicator(s). Efficiency (x 1) : ...
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8 views

Annonymous pre and post survey results with different N values

I have some survey data which was collected pre and post intervention. There is a drop off in the N value of respondents and the surveys were anonymous. Can I compare the pre and post at an aggregate ...
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1answer
37 views

Preprocessing survey data for clustering

I want to find 4-10 clusters in survey data with 100 questions answered by 2000 individuals using a technique such as K-means or Gaussian Mixture Models. There is no response variable so the ...
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18 views

Regression analysis for change in overall score of a likert based survey

We have a pre-post study and we want to assess the effect of an intervention on the change in the scores of a survey in a group of subject. The survey is made up of many likert questions. We will ...
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11 views

Converting Survey Scale

I have survey historical data collected in the below scale: Very Dissatisfied, Dissatisfied, Satisfied, Very Satisfied, Unable to Rate My Org is thinking of changing the scale to: Extremely ...
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16 views

Statistical Test for Survey Data: Count of “yes” Responses for Experimental vs Control Groups

I have a survey dataset with 20 questions. We did an experiment where half of respondents answered under one condition, and the other half under standard condition. I created a variable "YES" where ...
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1answer
18 views

Assessing effect of sample in its population

I have population of 200 people with their BMI . I want to remove 30 people of similar characteristics from the group and see if that makes any statistical difference on BMI of population(now 170). I ...
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32 views

Non-response in organization survey

I am a research analyst and recently conducted an employee satisfaction survey at the organization I work for. Ideally, I should have received completed questionnaires from all 380 employees (making ...
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30 views

Why would I use ratio estimation instead of regression estimation to estimate means?

I am taking a graduate course on survey data analysis. I was recently introduced to ratio estimation and regression estimation. I understand that using ratio estimator may be easier if we are ...
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21 views

How to analyse survey data with one predictor and multiple outcome variables?

I am a statistics newbie, so please excuse me if I am asking very basic questions! For my coursework (using R) , I am analysing three survey questions which all look at attitudes to saving in old ...
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24 views

How to determine correlation between gender/age/race and a binary response

I have a small data set with the responses of 30 survey respondents. Participants answered yes/no to one question. For each of the 30 survey respondents I have their race, age, gender, education ...
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40 views

Can I modify likert-type questions with different amount of points to same quantify of points?

I am on the level of launching my questionnaire for my master paper, but am concerned about my questions. Almost 80% of my questions are 7 point likert-type format, other 20% are 5 point likert-type. ...
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15 views

How to determine statistical significance in survey data?

I have some survey data asking people about their preference of fast food restaurants (n = 300). The question was posed with a "Pick your 5 favorite fast food restaurants" and we gave them a list with ...
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1answer
41 views

Permissible to use survey data in generating sampling weights?

Summary: Can I use non-population information (e.g. representative proportions from another survey) when calculating sampling weights? If so how might one account for the sampling error? I'm ...
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40 views

Reduction of questionnaire via FA versus control group

We are developing a questionnaire for evaluation of burden of disease after certain medical conditions. The questions are developed partly from semistructured interviews. My statistician argues for ...