No matter what type of Internet connection you have, you should be getting a consistent speed rate. Your Internet subscription is normally quoted in megabits per second (e.g. "10/1 Mbps", which would be 10 megatbits per second download and 1 megabits per second upload).
The results will show your latency, download and upload. The latency is the time it takes to get a response from the server (a lower number is better). The download and upload results should be close to your quoted speed rate. It won't be exact and due to overhead and equipment they will often be slightly lower, but it's a good way to make sure there isn't a major problem.
For example if your quoted speed rate is "10/1 Mbps" your download result should be at least 8 Mbps and your upload result should be at least 800 Kbps (or .8 Mbps). It's good to run the test multiple times to see how consistent the results are. If the results are not close to your quoted rate please contact Technical Support.