A Discrete Random Variable X Can Assume Five Possible Values

question 92

Multiple Choice

A discrete random variable x can assume five possible values: 2, 3, 5, 8, 10. Its probability distribution is shown below. Find the standard deviation of the distribution. $$\begin{array} { c | c c c c c } \mathrm { x } & 2 & 3 & 5 & 8 & 10 \\\hline \mathrm { p } ( \mathrm { x } ) & 0.10 & 0.20 & 0.30 & 0.30 & 0.10\end{array}$$

• A) 2.532
• B) 5.7
• C) 6.41
• D) 1.845

---

Definitions:

Introverts

Individuals who prefer solitary activities and require less stimulation from the external world compared to extroverts, often finding energy in reflection and solitude.

Electra Complex

A psychoanalytic theory proposed by Freud, suggesting a girl's psychosexual competition with her mother for possession of her father.

Freudian Slip

An unintentional error in speech or action that is interpreted as revealing subconscious thoughts or desires.

Repressed Memory

A theory suggesting that memories of traumatic events may be stored in the unconscious mind and inaccessible to conscious recall.