Stem-and-Leaf plot is a method of organizing numerical data in order of place value. The 'ones digit' and the 'tens digit and greater' of each data item is separated as leaves and stems respectively. The stem-and-leaf plot below shows the number of students enrolled in a dance class in the past 12 years.
Vaccination with live viruses may interfere with TST reactions. For persons scheduled to receive a TST, testing should be done as follows: Either on the same day as vaccination with live-virus vaccine or 4-6 weeks after the administration of the live-virus vaccine. At least one month after smallpox vaccination.
When you take a TB test, it takes about 48 hours to see if its positive or not. If a wheal (bump) forms and its itchy, DON'T scratch it, its really bad for the skin if you do.If its positive, you don't need to keep doing the TB test in the future, just the chest x-ray. Chickey Â· 6 years ago. Thumbs up.hen you take a TB test, it takes about 48 hours to see if its positive or not. If a wheal (bump) forms and its itchy, DON'T scratch it, its really bad for the skin if you do. If its positive, you don't need to keep doing the TB test in the future, just the chest x-ray. Chickey Â· 6 years ago. Thumbs up.