A Vaccine Produces Its Effects by

question 20

Multiple Choice

A vaccine produces its effects by

• A)directly attacking the antigens and neutralizing them.
• B)chemotaxis, the attraction of antigens to areas where the vaccine can destroy them.
• C)stimulating a primary immune response.
• D)activating autoantibodies.

---

Definitions:

Weighted Mean

The mean of a data set that accounts for the importance or weight of each value.

Population Parameter

A numerical value that describes a characteristic of an entire population, such as its mean or standard deviation.

Sample Statistic

A numerical measure that describes some characteristic of a sample, such as the sample mean or sample standard deviation.

50th Percentile

Also known as the median, it is the value below which 50% of the observations in a group of data fall.