The first chart shows that the data is approximately normally distributed. The mean, mode and median are very close to being equal. The data show very little skewness. The mean is 166.9, standard deviation is 76.1 with 24 cases.
The boundary between contagious and non-contagious infectious diseases is not perfectly drawn, as illustrated classically by tuberculosis, which is clearly transmissible from person to person, but was not classically considered a contagious disease.he non-contagious category of infections usually require a special mode of transmission between persons or hosts. These include need for intermediate vector species (mosquitoes that cause malaria) or by non-casual transfer of bodily fluid (such as transfusions, needle sharing or sexual contact).
What's the difference between infectious and contagious? Infectious diseases are caused by microscopic germs (such as bacteria or viruses) that get into the body and cause problems. Some â but not all â infectious diseases spread directly from one person to another. Infectious diseases that spread from person to person are said to be contagious. Some infections spread to people from an animal or insect, but are not contagious from another human. Lyme disease is an example: You can't catch it from someone you're hanging out with or pass in the street.