Consider the Following Frequency Distribution What Is the Cumulative Frequency of the Second Class Interval

question 57

Multiple Choice

Consider the following frequency distribution: $$\begin{array} { l c } \text { Class Interval } & \text { Frequency } \\100 \text {-under } 200 & 25 \\200 \text {-under } 300 & 45 \\300 \text {-under } 400 & 30\end{array}$$
What is the cumulative frequency of the second class interval?

• A)25
• B)45
• C)70
• D)100
• E)250

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Definitions:

IgG

Immunoglobulin G, the most common type of antibody found in blood and extracellular fluid, protecting the body against bacterial and viral infections.

IgA

Immunoglobulin A, a type of antibody that plays a crucial role in the immune function of mucous membranes.

IgD

A class of immunoglobulins involved in the immune response, found in small amounts in the body's fluids and tissues.

IgM

Immunoglobulin M, a type of antibody that is produced by the body's immune system as a first response to a new infection.