Data Analysis
What is data validation?
Process of ascertaining that interviews were actually conducted as specified.
What is coding of data?
Process of grouping and assigning numeric codes to open-end questions.
What is the importance of logical cleaning of data?
Final error checking before beginning analysis.
What is our greatest consideration in representations of data?
Simplicity
What are descriptive statistics?
Means of summarizing large data sets into more precise meanings.
What is data editing?
PRocess off ascertaining that questionnaires were filled out properly and completely.
How many codes are necessary for coding a data set?
As many as you feel are necessary but less than most people think.
What is a frequency table?
A count of answers to each question. The last step in data cleaning and the first step in analysis.
What is the simplest form of graph?
Line charts
What is the mean of a sample?
The average value of all of the data.
What is a skip pattern?
A sequence in which questions are asked based on respondent's answer to an earlier question.
What are the four main steps in coding data?
1. List responses given
2. Consolidate responses
3. Create codes
4. Enter codes
What is coding?
Consolidation of multiple qualitative answers in a smaller number of categories of response.
What type of graphic representation of data is often considered the most simple or clearest to understand?
Pie chart
What is the mode of a data set?
The most common number
Should incentives be used in surveying and, if so, what rules should you follow about them?
Yes. Make sure that the incentive is enough to incent survey completion and ensure that the odds of winning are not too high.
WHat is one of the latest methods of machine coding?
Scanning
When generating a frequency table, there are three critical elements to include to be able to confirm the counts are valid. What are they?
1. Total respondents.
2. Number of people asked the question.
3. Number of people that answered the question.
What is meant by the 'death of the crosstab'?
Marketers are getting to the point that they don't want to look through pages of crosstabs and are more powerful statistics, simpler data representation and summarized information.
WHat is the most common measure of data dispersion in a curve?
Standard deviation
What are the three steps in editing a data set?
1. Whether answers were not recorded for certain questions.
2. Whether skip patterns were followed
3. Whether the interviewer paraphrased respondents' answers.
What is a mechanical way to create codes graphically?
Word clouding
What are cross-tabulations (crosstabs) and what do they tell us versus frequency tables?
Crosstabs compare one set of responses to many different questions or categories. We can learn how responses in a frequency table breaks down across other variables.
What are the main four types of bar charts in graphic data representation
1. Plain bar chart
2. Clustered bar chart
3. Stacked bar chart
4. Multiple row, three-dimensional bar chart.What determines a normal distribution?
1. Bell-shaped curve
2. Mean median and mode are all equal.
3. Data is equally distributed about the mean.