Sample size is the number of visitors in a test or measurement. Small samples produce wide, unreliable ranges, so a rate from a few dozen visits tells you very little.
The number needed rises as the baseline rate falls and as the lift you want to detect shrinks. Work it out before a test starts.
“Webtec is fantastic and you should hire them. Over the years, we have worked with many companies - and many of them good at what they do. The thing that really separates Webtec from others however is that Webtec really knows how to anticipate the needs of their clients, and then provides the necessary support needed - such that it always looks like magic.”
Daniel DroiletGoogle · client since 2021
“Been a webtec client for a while now and so far they're the best in what they do, they redesigned my website, improved my seo which has skyrocketed traffic to the website...I highly recommend their services.”
Nassim JokoGoogle · client since 2020
“Extremely professional team-- very consultative on how to develop a modern web interface. Excellent support for design and graphics. Met each timeline and was very responsive to edits and updates.”
Pat FlanaganDesignRush
“We are a small non-profit but Webtec design has treated us like a fortune 500 Company. Always responding promptly to any needs that may arise along with top notch customer service and sales.”
BJay SBark · client since 2023
“Great support and experience from these guys. I was apprehensive about using a web developer, but they proved me wrong. They continue to support me with any website requests and they resolve things within 24 hours, which is great for a business like mine.”
Moeed AminGoogle · client since 2019
“Wow, just wow! I am so impressed with WebTec's work on my website redesign. They took my vision and turned it into a stunning reality. The team was communicative, creative, and incredibly professional.”
BWilliam TBark · client since 2022
“We have used Webtec to build and maintain our website. We couldn't be more pleased with the speed and quality that they were able to deliver. We are in the process of refreshing our content on our website and the Webtec team has been very responsive and affordable! We would recommend them highly.”
Betsy RomeriGoogle · client since 2019
“I had a great experience working with Webtec. The team was knowledgeable, responsive, and professional throughout the entire process. They took the time to understand my business needs and created a website that exceeded my expectations. Good job guys!”
BEvelinaBark · client since 2023
“Webtec took the time to listen and understand what my business was truly about and came up with the creative solutions to help me showcase it.”
Rita GubalisGoogle · client since 2021
“Webtec is fantastic and you should hire them. Over the years, we have worked with many companies - and many of them good at what they do. The thing that really separates Webtec from others however is that Webtec really knows how to anticipate the needs of their clients, and then provides the necessary support needed - such that it always looks like magic.”
Daniel DroiletGoogle · client since 2021
“Been a webtec client for a while now and so far they're the best in what they do, they redesigned my website, improved my seo which has skyrocketed traffic to the website...I highly recommend their services.”
Nassim JokoGoogle · client since 2020
“Extremely professional team-- very consultative on how to develop a modern web interface. Excellent support for design and graphics. Met each timeline and was very responsive to edits and updates.”
Pat FlanaganDesignRush
“We are a small non-profit but Webtec design has treated us like a fortune 500 Company. Always responding promptly to any needs that may arise along with top notch customer service and sales.”
BJay SBark · client since 2023
“Great support and experience from these guys. I was apprehensive about using a web developer, but they proved me wrong. They continue to support me with any website requests and they resolve things within 24 hours, which is great for a business like mine.”
Moeed AminGoogle · client since 2019
“Wow, just wow! I am so impressed with WebTec's work on my website redesign. They took my vision and turned it into a stunning reality. The team was communicative, creative, and incredibly professional.”
BWilliam TBark · client since 2022
“We have used Webtec to build and maintain our website. We couldn't be more pleased with the speed and quality that they were able to deliver. We are in the process of refreshing our content on our website and the Webtec team has been very responsive and affordable! We would recommend them highly.”
Betsy RomeriGoogle · client since 2019
“I had a great experience working with Webtec. The team was knowledgeable, responsive, and professional throughout the entire process. They took the time to understand my business needs and created a website that exceeded my expectations. Good job guys!”
BEvelinaBark · client since 2023
“Webtec took the time to listen and understand what my business was truly about and came up with the creative solutions to help me showcase it.”
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