Note 8 : Ch 9
Two-stage Cluster Sampling
Problem: Suppose we want to assess the
prevalence of malnutrition among a
population in a certain region. Suppose that
are N=7 villages in the region and the
number of individuals in each village is
different, so w

Note 7 (Ch. 8): Cluster sampling
Problem: Estimate the average income per household in a
large city.
SRS: SRS will need a frame listing all households
(elements) in the city, which would be difficult and costly to
obtain.
Stratified random sample: We cann

Note 6 : Ch 7
Systematic Sampling
Definition : 1-in-k systematic random
sample
Suppose the population elements are on a
list or come to the investigator sequentially.
It is convenient to find a starting point near
the beginning of the list and then sample

Note 5 : Ch 6
Ratio, Regression and Difference Estimation
Questions:
1. How do you determine the mpg for your car?
2. How much sugar (Y) a truckload of oranges given
the total weight (X) of the oranges?
Estimating a ratio :
R Y / X Y / X
Estimation of a t

Note 4 : Ch 5
Stratified Random Sampling
Objectives:
1. How to draw a stratified random
sample;
2. Estimation of population mean and
total
3. Selecting sample for estimating
population means and totals;
4. Allocation of the sample
5. Estimation of a popul

Note 3 : Ch 4
Simple Random Sampling
4.1 Introduction
4.2 How to draw a SRS
4.3 Estimation of population mean and Total
4.4 Selecting sample size for estimating population
mean and totals
4.5 Estimation of population proportion
4.6 Comparing estimates
Int

9/5/2012
3.2Meanandvarianceofadiscrete
randomvariableY
Note2:Ch3
Someconceptsofstatistics
3.2
3.3
3.4
3.5
3.6
Summarizing information in population and
samples (infinite population case)
Summarizing information in population and
samples (finite population

Note 1 ( Ch 2)
Elements of sampling process
2.1
2.2
2.3
Introduction
Vocabulary
How to select the sample
Probability Sampling Methods
Non-probability sampling
2.4 Sources of errors in surveys
2.5 Designing a questionnaire
2.6 Planning a survey
2.1 Introdu