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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2
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2answers
35 views

What is calibration?

What does it mean to calibrate survey weights? Also, what are other definitions of calibration in statistics? I have heard it used in several contexts, particularly risk prediction (referring to ...
0
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1answer
17 views

How to get weighted summaries of survey responses in R

I am analysing survey data. Since my demographic categories are discrete I can summarise responses within demographics using prop.table. However, I would also like ...
0
votes
1answer
28 views

Converting a 5-point Likert scale to 0 to 30 range

Hi thanks for viewing my question. In my research I want to adopt a measure from prior work and apply it to a new context. The question related to a 5- point likert-scale, however, further reading ...
0
votes
1answer
21 views

Dependent questions in SPSS [closed]

I have questions in a survey that are dependent on other questions, i.e. nested questions. How do I enter those into SPSS? Example: ...
0
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0answers
3 views

Profiling survey respondents with both categorical and ordinal variables

I have a mixture of categorical and ordinal variables from a survey that I am trying to use to create "profiles" or segments that differ from one another with respect to a dependent variable (the ...
0
votes
0answers
9 views

Hypothesis Testing $\mu_{..}$ vs $\mu_{i.}$ for all $i$ In Context of Sample Surveys

I have been tasked with creating a table of p-values, where each cell is a p-value testing $\mu_{..}$ = $\mu_{i.}$, for each level of $i$. Essentially, $\mu_{..}$ is total average and $\mu_{i.}$ is an ...
2
votes
1answer
10 views

Identifying which survey questions strongly predict follow-up test results

For context I work with a new youth outreach program that's trying to reduce incidents of STDs in our city. So far we've been using a naive approach that target everyone equally, but this has been ...
0
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0answers
28 views

Is random forest a right approach?

I am pretty new to stat and having read some articles about applying random forest algorithm. I have a employee survey return which contains approx 200 questions say 50 questions per a theme so there ...
0
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0answers
19 views

Statistics for Survey/Research: N subjects, 4 Rational Numbers, 16 Yes/No questions

I am conducting a survey/test on different people. Let's say I have N subjects I administer them a test with two parts which they are scored as pass or fail (1 or 0) Then I ask them some ...
1
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0answers
8 views

Multiple response question with copied observations

For an analysis with the answers of a multiple response question submitted by respondents as the dependent variable, I was thinking of using duplicate observations. So e.g. if a respondent submitted ...
0
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0answers
23 views

How should I combine this binary scale with this 4-point scale?

I'm doing a meta-analysis and I want to combine the results of two questionnaires. One questionnaire has 30 questions about whether you've experienced certain traumatic life events. They're all ...
0
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0answers
10 views

How do I calculate rank based on survey response?

I have done a survey that rank species on some criteria. Number of species per respondent may vary. Out of all listed species by a respondent, I ask them to rank (1 = highest). The lowest depends on ...
0
votes
1answer
30 views

Joint inclusion probability for Horvitz–Thompson estimator

There is a Wikipedia page for the Horvitz–Thompson estimator. It is an estimator for the population total. Unfortunately the page has failed to state the standard error. From here, the standard ...
0
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0answers
6 views

Searching for a term for systematic, universal non-reporting in survey data

I am searching for a technical term to describe a situation I have run into my survey research and analyzing survey datasets. In experimental survey research, systematic under-reporting and ...
0
votes
0answers
12 views

Likert score significance testing between two surveys

I have two surveys taken one month apart. They contain 20 Likert-type questions (strongly agree, agree, neither agree or disagree, disagree, strongly disagree). I have added strongly agree and ...
0
votes
0answers
16 views

How to estimate survey data at cluster level in a stratified clustering survey design?

While estimating from the survey data involving stratification & clustering survey design and using survey package of r, is it possible to estimate at the cluster level? For eg; for following ...
1
vote
0answers
18 views

weighting for non-response in a census-like survey

I am analysing survey results for a large organization. I have a frame of 8000 people with demographic information. Apparently, around 6000 of these people had valid e-mail addresses, and the survey ...
0
votes
0answers
25 views

Cronbach's Alpha

which types of items (Ordinal, nominal, scale) included in Cronbach alpha calculations? In other word, in my questionnaire i have a different types of questions (yes or no, Likert scale, and opened ...
3
votes
0answers
15 views

Correcting for heteroscedasticity in logistic regression

I am using a large health dataset as a part of a research project (N = ~18 000). My colleagues and I are investigating whether smoking predicts the presence or absence of a mental illness. We are ...
0
votes
0answers
14 views

goodness of fit vs independence test in finite population case

I have a finite population frame. Around 80% of the frame members have e-mail addresses, and a survey was sent via e-mail to those people. Roughly 20% of those to whom e-mails were sent replied to the ...
0
votes
1answer
39 views

So survey data cannot be normal distributed?

I am analyzing a data from survey. The data is from a 2X2 between subjects experiment design with 45 subjects in each of the four conditionsThe questions are based on a 5-point or 10-point scale. ...
0
votes
0answers
19 views

Can I pool my data?

I collected some data about purchase decisions. For simplicity, lets say my IVs were Price and Quality, and DV Intent to Purchase My survey prompt was something like "Answer the survey questions ...
2
votes
0answers
19 views

comparing two items of a questionnaire

I have developed a questionnaire that assesses the reasons why adolescents do not adhere to their asthma treatment. I have an item that asks 'How often are you supposed to take your asthma ...
2
votes
0answers
27 views

weighting of ordinal responses

I have seen some analysis of a survey where responses across a dozen similar questions which identified perceived problem issues have been weighted to create a composite score. Possible responses to ...
0
votes
1answer
12 views

How to word a survey question comparing alternative purchase choices?

I'm creating a survey to ask a customer that just bought a product what other products they considered before buying and how seriously they considered them. I'd like to use a Likert scale type of ...
0
votes
0answers
43 views

Is the use of PCA appropriate to validate a designed questionnaire?

I looked at the questions that may already have my answer but unfortunately it is not the case. I would like to ask again my question which has been revised to fit the rules. I am to measure 5 ...
2
votes
0answers
39 views

Statistical Significance?

I'm wondering if there is some sort of statistical significance test that would suit my data, or whether I have to depend solely on descriptive statistics. Here's what I've got: Thirty six students ...
2
votes
0answers
73 views

What is the best way to present rank survey data?

I have a survey data where I've asked a local community to rank 6 different issues they face on a scale of 1 to 6. For example, ...
0
votes
0answers
55 views

Is weighing cases allowed/necessary for the Kruskal-Wallis and its post-hoc tests?

I have a dataset where I have respondents from 3 different countries (USA, NL & DE) and use the Kruskal-Wallis to determine if there are any statistically significant differences regarding ...
0
votes
1answer
161 views

How to combine different questions of questionnaire into a single variable?

I have used a 48 item questionnaire - a Likert scale - with 5 points (strongly agree - strongly disagree). The questionnaire contains 6 categories and each category has 8 questions. 8 items correspond ...
0
votes
0answers
28 views

Generate weighted multidimensional index with Likert-data

I am a bit desperate and hope you can help me with my issue. I'm analyzing the attractiveness of several countries. To do so, I asked practitioners to evalute 17 dimensions on a 1-5 (5 best) ...
1
vote
2answers
42 views

In survey sampling, have calibration margins to be known (estimated with 0 variance)?

Calibration estimators in survey sampling (as defined by Deville and Särndal, and implemented for example in the SAS macro "Calmar") generalize many other calibration estimators, including ...
2
votes
1answer
92 views

Correct graph visualization for multiple-choice questions?

I'm working on a questionnaire with some multiple choice questions. Example: Which continents are you planning to visit? Africa Asia etc. The next will be to refactor the current analytics that ...
0
votes
0answers
19 views

How to determine the number of employees in a business when sources are inconsistent?

I am analyzing a business survey data. I am interested in the total number of employees of each firm. Specifically, I am interested in: The total number of employees in a specific city, and The ...
4
votes
0answers
48 views

Poor Results from UK Polls [closed]

Recent UK election showed how seriously wrong polls can be. I am wondering why almost all the polls predicted the wrong result in this particular incident. Is it because poll companies took wrong ...
0
votes
0answers
23 views

Are two sets of multiple choice survey responses different?

I have survey data with 2 distinct types of respondents: tall people and short people. They've answered a series of questions about their preference for certain foods. I'm trying to determine what ...
6
votes
2answers
101 views

Is the accessible population a random sample?

At academic institutions dedicated to teaching we often use our current students taking a specific class, the accessible population, as a random sample when our actual sample includes all students who ...
1
vote
0answers
29 views

Analyzing a “ranking” question on a survey

I gave a survey to Volunteers. Now I am not sure how to code a certain question, so I can evaluate. The question is "Please rank what motivates you to....? (1 = most motivating, 2 - 2nd most...). ...
5
votes
2answers
38 views

How was public opinion survey sampling done in early 20th century?

The question is motivated by reading about Gallup's success in predicting the 1936 US election with a much smaller but more representative sample than Literary Digest. Literary Digest used phone ...
6
votes
2answers
82 views

Estimating bias in surveys

Say a company runs a survey across random N cities independently in some country estimating the fraction of males and females on each city. E.g.: Males = $X_1$% ...
1
vote
0answers
12 views

Survey design with two scales

Can anyone help me out? I worked years ago on a research project that used a survey design that had two Likert scales for each statement. One measured agreement, the other importance. I've been asked ...
2
votes
0answers
93 views

Calculating needed sample size for two stage stratified cluster sample

We want to carry out a survey to assess perceptions of quality and access to medical education of last year students. Based on our research, we have decided that a two stage stratified cluster sample ...
3
votes
1answer
79 views

Controling segmentation process in order to get usable segments

My aim is to create segments based on survey data. This in it self is quite straight forward: I use PCA to extract information from the survey answers, and then ...
0
votes
0answers
43 views
0
votes
0answers
39 views

Multiple logistic regression models and survey data

I have a set of survey data that consists of answers to 10 knowledge questions along with demographic information about the respondent. Our question of interest is to identify which demographics are ...
0
votes
0answers
23 views

How to meaningfully collapse Likert-type scale by group?

I've a data set with a set of measures corresponding to group identifiers and Likert scale observation-level measures corresponding. On the lines of this discussion, my Likert scale variables can be ...
0
votes
1answer
80 views

Using post-stratification weights in R survey package

I am analyzing a dataset that has a variable for post-stratification weights. As this is a complex survey, the plan is to use the R survey package. I have been ...
0
votes
0answers
19 views

Which statistical tests requires one to know the sampling error?

I would like to know which statistical tests requires one to know the sampling error? I am planning on using an existing public online panel that is representative of the UK population by age, gender ...
0
votes
0answers
8 views

design-based model when there is info about stratification but not about clustering

I intend to estimate a couple of inequality indices in Latin America using the 2014 AmericasBarometer. It is probably the only recent survey covering a large number of countries in the region, with +- ...
0
votes
0answers
13 views

Making sense of Item Discrimination and Item discrimination index

I recently completed a questionnaire administration pre and post an intervention. The sample size was 157 for 13 items. I ...