A negative result means the test did not detect elevated levels of altered DNA and/or hemoglobin that could be caused by cancer or precancer in the colon or rectum. The test can also have a negative result that is incorrect (false negative). This means the test result missed a potential cancer or precancer.For that reason, it is recommended that you schedule regular screenings.Your doctor may recommend an alternative screening method. Talk to your doctor about your test result.he test can also have a negative result that is incorrect (false negative). This means the test result missed a potential cancer or precancer. For that reason, it is recommended that you schedule regular screenings. Your doctor may recommend an alternative screening method. Talk to your doctor about your test result.
The new distribution of the normal random variable Z with mean `0` and variance `1` (or standard deviation `1`) is called a standard normal distribution. Standardizing the distribution like this makes it much easier to calculate probabilities.
Standard Normal Distribution Table. This is the bell-shaped curve of the Standard Normal Distribution. It is a Normal Distribution with mean 0 and standard deviation 1.It shows you the percent of population: 1  between 0 and Z (option 0 to Z).2  less than Z (option Up to Z).t is a Normal Distribution with mean 0 and standard deviation 1. It shows you the percent of population: 1  between 0 and Z (option 0 to Z). 2  less than Z (option Up to Z).