Sample Effectiveness Survey

The best way to inform us about the effectiveness which represents a product or service for your customers is making a survey.
A survey would allow us to know the degree of satisfaction that customers have regarding the operation and effectiveness of a certain product or service.
For example, here is a survey to know the degree of effectiveness what a multipurpose vacuum cleaner has meant to your buyers:
As a responsible company concerned with meeting the needs of our customers, we extend this short questionnaire to find out your opinion about our product, your effectiveness and functionality.
1. How long ago have I bought the multipurpose vacuum cleaner?
a) 1 month or less
b) 2 to 6 months
c) 6 months to a year
d) more than a year
2. During the time you have been using the multipurpose vacuum cleaner, has it been useful?
a lot
b) Little
c) Nothing
3. Has the multipurpose vacuum made your cleaning tasks easier?
a lot
b) Little
c) Nothing
4. Since what time have you used the multipurpose vacuum cleaner, has the time you spend on cleaning reduced?

a lot
b) Little
c) Nothing
5. Are you satisfied with your purchase?
a lot
b) Little
c) Nothing
6. Would you recommend the multipurpose vacuum?
So
b) No
7. We would appreciate if you share your comments with us: