# Tagged Questions

The finite-population tag has no wiki summary.

0answers
12 views

### How to handle samples with many replicates for population estimation,when sample size is small?

I have a sample with very small sample size ($n<10$) and I would like to estimate the population mean. However, some of the samples are replicates (for instance, sampled at the same location). ...
0answers
57 views

### When regression is run on population

I have a small population and it is possible to estimate Population regression function from the data. The size of the population is very small. It is only eight. I think since the regression ...
0answers
207 views

### How to compare the means of two dependent groups when the groups are not paired?

I have performed a behavioral experiment on bees from one single hive. I let them fly under two different conditions and now I want to compare the average flight speed in the two conditions. The ...
1answer
69 views

### What is the amount of certainty in this yes/no test?

A child must learn a poem by heart. The poem has 200 lines. To test the child, the teacher asks the child to complete ten lines of the poem given the first half of the sentence. If the child gets, ...
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68 views

### How to use finite population correction in multiple regression?

I have a small population of N=137 and a (presumably representative) sample of n=81. The corresponding Finite Population Correction (FPC) factor is FPC=SQRT {(N-n)/(N-1)}= 0.64. Can I apply this ...
1answer
265 views

### how to determine sample size?

I have population size of $2000$. I used Cochran's formula to determine sample size which is $$\text{Sample Size} = \frac{n}{1 + (n/\text{population})}$$ in which $n$ is equal to \$Z * Z [P ...
0answers
67 views

### What is the most powerful test for process discrimination based on its finite output?

I have two finite sequences of numbers derived from one or more unknown processes. What is the most powerful test (in sense that it is least affected by finite length L) to find out whether two ...
0answers
30 views

### How is it that the required sample size for a specified error and confidence is not dependent on population size? [duplicate]

Possible Duplicate: Why does standard error not involve population size? When calculating confidence intervals for population parameters, the population size is never a factor, rather ...
0answers
171 views

### Two Sample Proportion Test - Finite Population

If there is a population that we consider fixed (finite) with size N - say the customers at a bank at the end of a given month - and we want to conduct an experiment on this population by randomly ...
1answer
123 views

### How to efficiently expand a simple random sample after population growth?

I have a simple random sample (SRS) $S$ of size $n$ drawn from a population $D_1$ containing $N_1$ members. A new set $D_2$ with $N_2$ members is added to the population. I would like to create a ...
1answer
113 views

### Sampling variance is reduced when removing duplicates — why?

I have carried out a simulation experiment where $n$ out of $N$ items $x_i$ were drawn with replacement with unequal probabilities $z_i$ from a finite population. (If it matters: $z_i = 1/(Nx_i)$ in ...
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42 views

### Determine weights from selection probabilities in a “with replacement” sampling scheme [duplicate]

Possible Duplicate: Derive househould weights from a uniformly distributed person sample EDIT: Essentially, I have answered the question myself in the linked question: Derive househould ...
3answers
172 views

### Calibrating a household survey to household-level and person-level control totals

Imagine a (reasonably large) household survey where all persons in every household have been questioned. For the purpose of microsimulation, this survey needs to be expanded to a full population. In a ...
1answer
757 views

### Margin of Error for Likert scale response

Suppose the target population is a group of 11 company CEOs and 7 CEOs responded to a question about their level of annual bonus on a 7 point Likert scale. The responses are as follows: 7, 7, 7, 7, ...
1answer
309 views

### Bias of autocorrelation function in finite sample for ARMA processes

I remember reading that, when estimating the autocorrelation function of a univariate ARMA time series using finite samples, the estimate is biased and specifically the lag-1 ACF is negatively biased ...
2answers
561 views

### When the population has a known fixed size, are tables for the t statistic wrong?

As I understand it, Student's t will asymptotically approximate the Z statistic at sample sizes approaching infinity (see the infinite degrees of freedom row for degrees of freedom in most ...
0answers
104 views

### Significant difference between two small populations sampled without replacement

Suppose I sample and perform tests from two small populations, without replacement, and I want to test for a significant difference in the proportions of positives in each population. How can I ...
1answer
74 views

### How to define specific population for Public Opinion

I am trying to study the public opinion concept linked to quantitative measurement of opinion distributions and i am trying to define major parameters and methods that can help me starting from a ...
2answers
4k views

### Statistical power and minimum sample size for ANOVA with likert scale as dependent variable

I'm trying to compute the minimum sample size for a psychometric test based on 7 point Likert scales. I'd like to run ANOVA on each scale to look for differences between groups. Most online survey ...
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