The T-test is a statistical test that measures the significance of the difference between the means in two sets of data in relation to the variance of the data.
The T-test can be used to determine whether two samples are statistically different when each small group of data is taken from distinct populations, the results from each group are not dependant on the results from the other group and the distribution of data in both groups is considered to be normal (determined by normality test). However, the T-test is not suitable for evaluation of three or more variables (analysis of variance is used in this case) or for evaluating large sets of data (the Z-test should be used for large samples).Learn More
A bone density test is used to determine whether a patient has osteoporosis or not, according to Mayo Clinic. During a bone density test, x-rays are used to determine how many milligrams of bone minerals are present in a specific section of bone, such as the hip, forearm or spine.Full Answer >
The best home blood pressure monitor has the right cuff size, is validated and meet the specific needs of an individual. There are different types of monitors out there, but it is sensible to choose one that is fully automatic.Full Answer >
Non-hemolyzed blood is blood in which the red blood cells remain intact, and is important for blood testing. Certain conditions can cause the red blood cells to break down prematurely resulting in hemolysis, or hemolyzed blood.Full Answer >
An endoscopy takes around 20 to 30 minutes to complete, according to Cancer.Net. An endoscopy is a procedure in which a doctor threads a thin, flexible tube that is attached to a camera down the patient's throat to view his upper gastrointestinal tract.Full Answer >