quantitative research. in this lesson, we will deepen our skills in quantitative research methods...

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.