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77 Cards in this Set

  • Front
  • Back
Problem definition
1. Management decision problem
2. Marketing research questions/objectives
3. Constraints
Secondary data:
Data that exists
Can be internal or external
Primary data:
Data does not exist that is needed to collect for a particular project
Can be qualitative or quantitative
Advantages and disadvantages of secondary data
Advantages:
1. Availability/efficiency
2. More objective data
Disadvantages:
1. Might not be accurate/relevant
2. Source credibility
3. Appropriateness of methodology
4. Source bias
Exploratory Research aims:
1. Generates qualitative data
2. To understand the purpose of the research
3. To identify key variables to measure
4. To establish research priorities
Technique in in-depth interviews
1. Design interview protocol
2. Provide comfortable environment
3. Give time to think (don't lead/interrupt)
4. Summarise participants' words to ensure understanding
5. Ask for clarification if not clear
6. Avoid evaluative comments or leading questions
7. Let subject do the talking
Analysing data of in-depth interviews:
1. Find most often talked themes
2. Organise/structure themes
3. Describe themes
4. Measure frequency of response in each theme
Projected interviews:
a process, which helps to uncover subjects' true feelings or opinions about a topic (by talking about what "other people" would do)
Observation method
Direct vs Indirect
Disguised vs Undisguised
Structure vs Unstructured
Human vs Mechanic
Descriptive Research aims:
1. Describe profile of target market
2. Describe status of key variables in target market
3. Explore the relations between key variables
Type of descriptive research
Cross-sectional
Longtitudinal
Survey is...
a method of collecting primary data from a representative sample of population
Advantages of survey (DR):
1. Efficiency (cheaper/less time consuming)
2. Standardisation (easier to interpret/code)
3. Identify subgroups difference
Factors for selecting a survey method
1. Budget
2. Quality of responses needed
3. Length of survey
4. Sensitivity of the topic
5. Incidence rate
6. Time constraints
7. Stimuli to be presented during survey
8. Completion rate
9. Diversity of subject
Response format:
1. Open-ended
2. Categorical
3. Scaled
How to choose response format:
1. Nature of the variable needed to be ask
2. Survey method
3. Level of statistical analysis needed
4. Ability of participants
5. Previous research studies
Type of measurement scales
1. Comparative
2. Non-comparative
Comparative scales
1. Paired comparison
2. Rank order
3. Constant sum
Non-comparative scales
1. Continuous rating scale
2. Likert scale
3. Semantic differential scale
Construct:
Concept that we are interested in measuring (i.e friendship closeness)
Variable:
Factor that we will measure the construct on (i.e time spent together)
Single item scale:
Measure on 1 dimension of a variable (i.e like --> don't like)
Multiple item scale:
Measure on multiple dimensions of a variable (i.e positive, favourable, tasty...)
Guideline to develop a questionnaire
1. What should be asked
2. How to phrase a question
3. How to organise question
4. What is the layout of the questionnaire
5. How to pre-test a questionnaire
What should be asked?
1. Start with research objectives
2. Consider variables that need to be measured
3. Determine scale to be used
Principles in phrasing questions
1. Avoid extreme words (all, always, best, ever...)
2. Avoid loaded questions
3. Avoid ambiguous words
4. Avoid double barrelled questions
5. Avoid broad questions
6. Avoid abbreviations and jargons
7. Avoid leading questions
8. Avoid questions that are hard to answer
9. Avoid wrong/ambiguous scale
10. Avoid questions that may cause social desirability
How to organise questions:
1. Start with screening/filter questions
2. Warm-up questions
3. Use transition statements (include "skip" questions)
4. Divide questions into sections for main research objectives
5. Leave personal (demographic except screening) and possibly offensive questions until last
How to pre-test:
1. Test reliability of measurement items
2. Test readability of questionnaire
3. Measure the time required to complete questionnaire
Steps in defining sampling method and size
1. Define target population
2. Select sampling frame
3. Select sampling method
4. Determine sampling size
5. Determine number of contacts
6. Conduct field work
How to define target population?
Look at research objectives
What is sampling frame?
List of all eligible objects for your research
Sampling methods:
1. Simple sampling method
2. Systematic sampling method
3. Cluster sampling
4. Stratify sampling
5. Convenience sampling
6. Judgmental sampling
7. Referral sampling
8. Quota sampling
What is simple random sampling? Adv. and disadv.?
Assign number to each of member in target market, use program to randomly select a required number of participants for sample population.
Advantage: Not biased and most representative method
Disadvantage: Need to know everyone in the target population and assigned each a number
What is systematic random sampling? Adv. and disadv.?
Systematic sampling method is like SRS but objects are sorted in a particular way (i.e alphabetical) --> Choose a random starting point and skip a constant interval to select a member for sampling population.
Advantage: Easier and faster than SRS
Disadvantage: May have "hidden" pattern --> biased
What is cluster sampling? Adv. and disadv.?
Dividing target population into similar subgroups and choose to test on one of them.
Advantage: Convenient and quick
Disadvantage: Groups may not be similar to each other. One group may not be representative enough of the whole population.
What is stratified sampling? Adv. and disadv.?
Diving target population into homogenous group within and heterogeneous group between. Select number of representatives from each group (proportionate to the size of subgroups) to form a sampling group.
Advantage: Ensure sample representativeness and non-bias
Disadvantage: Hard to define basis for stratifying
What is convenience sampling?
Choose sample at the convenience of researchers
What is judgmental sampling?
Choose sample based on the judgement of the fit of a particular person to be sample participant
What is referral sampling?
Select number of representatives and ask them to invite more representative people (base on their judgment) to participate in the research.
What is quota sampling?
Like stratifying sampling method, however participants from each subgroups are not chosen randomly, but on a per-specified selection objectives to form a representative group. --> bias
Ways to determine sampling size
1. Rule of thumb (usually 5% of target population)
2. Past research
3. Cost-benefit approach
4. Statistical analysis approach
5. Confidence interval approach
Data preparation process:
1. Data Validation
2. Data Editing
3. Data Coding
4. Data Entry
5. Data Clean
Data validation:
To make sure that the data collection process was correct, unbiased and valid.
How? Re-test by contacting a number of participants in the sample --> may be impossible if there are no information about participants --> choose a trustable survey agent
Data editing:
A process of picking up data mistakes: strange patterns (non-correlation between answers, speeders), make sure respondents understand instructions.
Data coding:
A process of numbering responses in the questionnaire
Data entry:
Use SPSS to enter data
Data clean:
Missing values: if a lot people don't answer the question --> there may be problem with question
Outliers: respondents with strange patterns
Normality: check on kurtosis and skewness
What is type I error?
When we reject the null hypothesis when it is true.
The probability of making such mistake is alpha (level of significance)
Causal Research:
To find out the cause of effect and validate that it is the only cause
Assumptions of causal research:
1. Co-variation: there must be a relationship between IV and DV --> test for association of the data must be done prior
2. Time sequence: IV must occur prior or at the same time as DV
3. Systematic elimination: all other possible causal variables (extraneous) must be eliminated from the research
Types of experimental design:
1. After-Only
2. One group, before-after
3. After-Only with control group
4. Before-After with control group
After-Only experimental design
Measure the result after the treatment effect without prior measurement of that group. Assume prior knowledge as a baseline for comparison.
--> very subjective, but cheapest and quickest
One Group, Before-After experimental design
Measure the result before and after treatment on 1 group.
Problem:
If the time gap is too big --> there may be a lot of extraneous variables (mood, tiredness...)
If time gap is too small --> social desirability bias (participants may guess the aim of the research and response in a desirable way)
After-Only with control group
Have 2 similar groups. One group (G1) with treatment, other group (G2) without. Measure the effect on both group. Treatment effect = result of G1 - result of G2.
Problem: hard to control extraneous variables because there are 2 different groups --> choose similar demographic, geographic groups

With psychographic and behavioral differences --> randomization to minimize the difference between 2 groups
Before-After with control group
Have 2 groups chosen on random basis (minimize difference). Measure BEFORE effect of 2 groups, then measure AFTER effect of group 1 (with treatment) and group 2 (without treatment).
Treatment Effect = (G2A-G2B) - (G1A-G1B)
--> expensive, difficult but most effective
Types of experiments validity
Internal: X is the only cause of Y (extraneous variables are controlled)
External: This relationship can be generalized in the population (under other conditions like time, weather, country...)
Threats to external validity:
1. Sample does not represent the population
2. Artificial setting in lab experiments
Main reasons for field experiment:
1. Determine sales potential for new products
2. Test the effectiveness of marketing mix
Types of relationship between variables:
1. Linear: strength and direction of the variables are constant
2. Curvilinear: strength and direction of the variables changes over the course of the variable
What to do when cell validity in Chi-Square is disrupted?
1. Use another test
2. Merge or remove category with too few people in it
When Chi-Square test is valid?
When there are no cells with count less/equal one or more than 20% of cells with counts less than 5
Steps in doing multiple regression analysis:
1. Adjusted R-Square
2. F-value of ANOVA: statistical significance of overall model
3. p-value in coefficient table: the likelihood that relationship exist between IV and DV
4. Standardised beta-coefficient: importance of IV to DV
5. Collinearity statistics: tolerance >10; VIF<5 (no prob)
6. If multicollinearity presents --> check correlation between 2 IVs, remove one of IVs if correlation >0.70 and do test again
Point of estimate:
A statistic that estimate the value of population parameter
Confidence Interval =
Point of estimate +/- Margin of Error
Confidence interval is:
A range of value that is likely to capture the true population parameter
Confidence level:
The probability that a confidence interval will contain the population parameter
Margin of error:
The difference between sample statistic and population parameter
Adv. & Disadv. of open-ended response format?
Adv: allows respondents to use their own words
Disadv.: difficult to code and interpret
Adv. & Disadv. of categorical response format?
Adv: simple to administer and code, may alert respondents to options of which they were unaware/forgotten
Disadv: Oversimplify response options (give "other, please specify" option); Assumes that researcher knows the options
Adv. & Disadv. of scaled response format?
Adv: improve accuracy in response; allow the degree of attitude/feelings to be expressed
Disadv: assume that respondents understand the scale; different respondents may interpret scale differently
How to decide on sampling method?
Choose probability sampling if:
- Do descriptive or causal research
- Variability in population is high
- Budget is sufficient
Choose non-probability sampling if:
- Do exploratory or causal research
- Variability in population is low
- Budget is limited
Factors to choose between single and multiple item scales:
1. Characteristic of the variable
2. Survey method
3. Analysis method
How to test reliability of single item scale?
Use Test-retest technique: measure responses in T1 and T2 (or of 2 groups at the same time), if correlation between responses is high --> scale is reliable!
How to test reliability of multiple item scale?
Use SPSS to measure Cronbach's alpha, if it's >0.6 --> measure is reliable
What is content validity?
Subjective assessment of how well the variable represents the construct to be measured
Factors determining adv. & disadv. of survey methods?
1. Length of questionnaire
2. Quality control
3. Flexibility (demo product)
4. Data input (easy/hard)
5. Cost
6. Social desirability bias
7. Follow up opportunity (easy/hard)
How to segment the market?
1. Choose behaviour that you want to associate with the product
2. Find and describe consumer segment that would possess those behaviours