When running my test I am seeing very high Standard Diviation numbers. Just curious if this is just a result of the program I am testing or are there some techniques that help reduce this number?
Standard Deviation in your test tells whether the response time of a particular transaction is consistent throughout the test or not? The smaller the Standard Deviation, the more consistent transaction response time and you will be more confident about particular page/request. Delivering a consistent experience to the end-user is just as important as delivering a fast and responsive experience.
So better if you could ask developer to tune the application to reduce the SD.
For more information, you can refer to the article: