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Quantitative Research. In this lesson, we will deepen our skills in quantitative research methods to: Explain how survey tools can be used to evaluate your campaign’s impact. Describe the value of sample size for your quantitative research and measurement of impact. - PowerPoint PPT Presentation
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Quantitative Research
Quantitative Research
Quantitative Research
In this lesson, we will deepen our
skills in quantitative research
methods to:
• Explain how survey tools can be
used to evaluate your
campaign’s impact.
• Describe the value of sample size
for your quantitative research
and measurement of impact.
• Define representative sampling
and identify the key factors in
bias.
Quantitative Research
• Review of Research Questions and
Research & Planning Timeline (15 Mins)
• Discovering Key Concepts Representative Sampling, Sampling
Size and Design (1.5H) Reading and Group Workshop (1.5H)
• Revisiting Your Research Plan and
Rubrics (1.5H)
QUANTITATIVE RESEARCH SESSION OUTLINE
Quantitative Research
Research Planning Process
Conceptualization(1)
Research Design
(2)
Data Collection(3)
Data Analysis(4)
Quantitative Research
• Scope: • target population, or
the group of people
that you want to
study with the survey.
• Comparison Site
Conceptualization
(1)
Quantitative Research
SURVEY SAMPLING RANDOM SAMPLING
Define target population Choose a sample frame Stratified sampling
Research Design
(2)
Quantitative Research
Quantitative Research
What is Statistics?
A method for collection
and interpreting
quantitative data• Collection: Data is
collected the right way
• Analyzing:
Mathematical tools or
models for
interpreting data
Quantitative Research
Quantitative Research
Quantitative Research
Statistics and your Survey: Sampling
• Usually impossible to interview everyone in
your area (at most sites) so you take a
sample
• A sample is a subset of your TA that is used
to represent the whole group.
• If they represent the WHOLE group then….
— You want to select a representative
sample
Quantitative Research
Why is ‘representative’ so Important?
Quantitative Research
What is representative?
Quantitative Research
What is the full spectrum?
Quantitative Research
The Normal Distribution
Quantitative Research
Who represents your Target Audience?
Quantitative Research
Designing your Survey: Representative Sampling
*Representative: The survey is designed
such that the frequencies (or percent types
of people) sample reflect the true
frequencies (or percent types) in the
population
• Age range
• Gender
• Employment
• Socio-economic status
Quantitative Research
Representative sample step: Determine your sample scope
Where do your target
audience or audiences
live?
Quantitative Research
Sampling and Campaign Decisions
How many samples do I need to collect?
Quantitative Research
Key Concepts
Confidence
Interval: • reflects the
range of
numbers that
reflect the
‘true value”
0 0.5 1 1.5 2 2.5 3 3.5 4 4.50.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
Group1Group2Group3Mean
Quantitative Research
• Confidence Level: tells you how sure you can be you that your
sample is generally representative of your
population.
— NOTE: Don’t worry about this – just
know that we use a 95%
confidence level and it
tells you how confident you are that
your estimate (of knowledge e.g.) is
accurate
Quantitative Research
Select your Sampling Strategy
• Design a truly random sample
• How many samples do I need to collect?
• Sample Size Calculator: http://www.surveysystem.com/sscalc.htm
— Population Size: ?
— Confidence interval: 5% (Rare standard)
— Confidence level: 95% (Rare standard)
Quantitative Research
How many samples do you need here?
Quantitative Research
Where can you go to collect your data?
• Door to Door
• Any Other Defined Place
• Pre-Determined Location
• Central Location
Data Collection
(3)
Quantitative Research
Sample Size
Factors to consider
• Determining your Sample Size
• Confidence Intervals
• Population Size
• Sample Size Estimator
Quantitative Research
Tips for Data Management
Here are some key tips for staying on top of
quantitative data:
1. Create a plan
2. Create a data input process
3. Stay Organized
4. Write legibly, neatly, clearly
5. Document the choices
6. Get help
Quantitative Research
Back up your Data!
Quantitative Research
ADDING TO MY RESEARCH PLAN
5
Quantitative Data Collection
Quantitative Research
(Week 3, Day1)22-Sep
5.1 KAP Quantitative Survey
Quantitative Research
(Week 3, Day1)22-Sep
5.2 Sampling Design
Quantitative Research
(Week 3, Day1)22-Sep
Quantitative Research
..\..\Research Plan Template_Phils2_10September2012.docx
SAMPLE CALCULATOR
www.surveysystem.com/sscalc.htm
Quantitative Research
Quantitative Research
Review Serena Research Plan
Quantitative Data Collection ( page 6) – review the gold standard and make your own section in your research plan
Quantitative Research
In this lesson, we will
deepen our skills in
quantitative research
methods to:
• Explain how survey tools can be
used to evaluate your campaign’s
impact.
• Describe the value of sample size
for your quantitative research and
measurement of impact.
• Define representative sampling and
identify the key factors in bias.