Surveys are used to obtain the Voice of the Customer.
Create a clear, unbiased, and complete survey to get relevant feedback without being difficult for the respondent to complete and return. The proper choice of words and linear scale settings are important characteristics.
The key to understanding qualitative analysis is that the survey question responses will be in the form of words instead of numbers.
These types of surveys may contain questions that are:
Questions that offer the most freedom to respond have the benefit of obtaining a higher level of detail but also take the most time to decipher and analyze. These also run the risk of needing to follow-up (if possible) or possible misinterpretation.
Sample questions are:
Review the first question. There could be the following responses:
1) Great price
2) Referral from a friend/family
3) Already own one, good reputation and trust
4) Good warranty
5) Higher quality and fair price compared to competition
6) Nothing else on the market
These responses would be reviewed by the team and broken down into categories such as Quality, Price, Brand, Delivery, and Customer Service.
Then organize the responses into the categories and it is possible that one response may get multiple categories (such as question #5) which is the benefit of open-ended questions.
The following is a methodical way to break down the responses to open-ended questions.
1) Have the team review the responses and try group consensus to categorize the response.
2) Create possible categories for answers and there will likely be some responses that don't seem to fit, or can be labeled as miscellaneous. If there are too many of these, it is possible the question needed to be more specific.
3) Determine the number (count) of responses in each category.
4) Display counts in each category and now the BB/GB can provide the team results in terms of percentages, mode, rankings, or just the count of each category.
Questions that offer two choices to respond are binary questions. You may offer the responses and have the respondent select one, or it may be obvious to the two choices and they can write in their response.
Sample questions are:
These are simply categorized and then analyzed.
CATEGORICAL PREFERENCE "WORDED" QUESTIONS
Many surveys use numbers to represent categories or classifications and the difference between each number has meaning.
1 = POOR
2 = FAIR
3 = AVERAGE
4 = GOOD
5 = EXCELLENT
Other questions are:
When you provide the possible answers it is easier to categorize and count but sometimes the responses may not be exactly the respondents best choice or ideal answer.
They may feel obligated to pick one and this can lead to wrong decisions from the statistical analysis. This is non-metric or qualitative data and requires the use of non-parametric tests to evaluate statistically.
Qualitative feedback is more challenging to break down into similar categories. Tools such as the Affinity Diagram can help the team break down questions and responses into preference categories for analysis.
This often is more time consuming and difficult to perform than quantitative analysis but usually provides more information and detailed responses than just a number.
Quantitative analysis is usually less expensive to conduct and are easier to conduct with automation and electronic mediums. It is also easier to mine the data to investigate trends and statistics but lacks some of the details a worded response or open-ended response will provide.
An excellent source for survey guidance and creation is at www.surveymonkey.com
Mar 20, 17 07:14 PM
One source that links the most commonly used Six Sigma material with examples, tools, and templates. Support materials are referenced and Black Belt certification problems are also available.
Jul 17, 16 12:12 AM
Proper data classification is necessary to select correct statistical tools
Jun 22, 16 07:13 PM
Description of the 7-Wastes, also called Muda
Six Sigma Modules
The following presentations are available to download
Green Belt Program 1,000+ Slides
Cause & Effect Matrix
Central Limit Theorem
1-Way Anova Test
Correlation and Regression
Six Sigma & Lean Courses