All Questions
Tagged with survey-sampling self-study
8 questions
0
votes
0
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25
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Definition of rotated panel sampling
I am doing exercises and I come across a question that asks me to describe sampling with rotated panel.
What does rotated panel sampling mean?
- 83
2
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0
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196
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Survey with two simple random samples without repetition
I have an particular exercise of sampling survey, or sampling theory, which I report below.
One is interested in knowing the price per gram of gold produced by 100 companies. A monthly survey of a ...
- 83
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1
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90
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Unbiased estimatior for $\bar{x} $ from a Random Sample with unequal selection probability
I have the following population:
Where the left column is the age of our individuals and the right column is their weight (in kg).
The exercise tells us that we use Random Sampling with no ...
- 23
1
vote
1
answer
219
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Two phase sampling method for stratification
Question:
$\$3000$ is allocated for a survey estimated proportion. The main survey will cost $\$10$ per sampling unit. Information is available in files, at a cost \$0.25 per sampling unit, that ...
- 11
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313
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Covariance between sample mean and subsample mean
To estimate $\overline{Y}$(population mean), suppose an SRSWOR of size $n$ is taken from a population of size $N$, and the sample mean $\overline{y}$ is calculated. Then an SRSWOR subsample of size $...
- 225
2
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1
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162
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probability sampling calculating probabilities
Consider a population with 10 elements , N:{0,1,2,3,4,5,6,7,8,9}.
The probability of drawing
...
- 487
1
vote
1
answer
14k
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Neyman allocation and proportional allocation
Suppose that a city has 90,000 dwelling units, of which 35.000 are houses, 45,000 are apartments,
and 10,000 are condominiums. We want to estimate the overall proportion (p) of households
in which ...
- 13
8
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1
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3k
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Question on Covariance for sampling without replacement
Suppose I have numbers 1,2... 10 and I sample 5 from them randomly without replacement noted as $X_1, X_2, X_3, X_4, X_5$ What is $Cov(X_i,X_j)$ for $i \not=j$
So $Cov(X_i,X_j)=E(X_iX_j)-E(X_i)E(X_j)$...
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