The standard deviation is a measure of how the data is clustered about the mean. For large sets of data, approximately 68.3% of the data lies within one standard deviation of the mean and approximately 95.4% of the data lies within two standard deviations of the mean.
Influenza (also known as the flu) is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. The best way to prevent the flu is by getting a flu vaccination each year.
Actually, the flu is the disease (influenza) and the microbes are what cause the disease, not the other way around.nswer by D4est. Confidence votes 40.4K. Actually, the flu is the disease (influenza) and the microbes are what cause the disease, not the other way around. The pathogens (microbes) responsible for the infectious disease called influenza are viruses.