A) 131
B) 1

question 28

Multiple Choice

$$\begin{array}{l}\text { Give the variance of the following distribution? }\\\begin{array} { l | c c c c c } \boldsymbol { X } & 0 & 1 & 2 & 3 & 4 \\\hline \boldsymbol { P } ( \boldsymbol { X } ) & 0.20 & 0.35 & 0.10 & 0.25 & 0.10\end{array}\end{array}$$

• A) 1.31
• B) 1.83
• C) 1.25
• D) 1.71

---

Definitions:

Months

Units of time, typically consisting of 28 to 31 days, used in calendars to divide the year into twelve periods.

Depth Perception

The ability to perceive the world in three dimensions and to judge the distance of objects.

Infants

Very young children, typically under one year old, who are in the earliest stages of physical and cognitive development.

Months of Age

A method of expressing the age of infants and very young children by the number of months since birth.