Find the Standard Deviation of the Poisson Random Variable $\lambda$ = 10620 Find the Standard Deviation of X

question 57

Multiple Choice

Find the standard deviation of the Poisson random variable. Round to three decimal places.
-Suppose X has a Poisson distribution with parameter $\lambda$ = 10.620. Find the standard deviation of X.

• A)10.620
• B)5.310
• C)3.259
• D)112.784

---

Definitions:

Sociometry

The classic way of assessing social competence and determining the kinds of categories that describe children’s status within peer groups. Usually involves asking members of a social group (e.g., children in a classroom) to indicate which members of the group they prefer to spend time with (sit with, play with, etc.) and which they do not.

Social Dosage Technique

An approach or method in social psychology used to measure or change the amount of social interaction or stimulation.

Resilience Assessment

The evaluation of an individual's ability to recover from or adjust easily to misfortune or change.

Cognitive Theorist

Cognitive theorists study how human thoughts, perceptions, and feelings affect their behavior.