Instruction 3-3
the Stem-And-Leaf Display Below Represents the Number of Vitamin

question 52

Short Answer

Instruction 3-3
The stem-and-leaf display below represents the number of vitamin supplements sold by a health food store in a sample of 16 days.
$$\begin{array} { c l } \text { Stem } & \text { Leaves } \\\hline \hline 1 \mathrm { H } & 99 \\2 \mathrm {~L} & 0023 \\2 \mathrm { H } & 567 \\3 \mathrm {~L} & 034 \\3 \mathrm { H } & 568 \\4 \mathrm {~L} & 1\end{array}$$ Note (1): 1H means the "high teens" = 15,16,17,18,or 19;2L means the "low twenties" = 20,21,22,23,or 24;2H means the "high twenties" = 25,26,27,28,or 29,etc.
Note (2): For this sample,the sum of the observations is 448,the sum of the squares of the observations is 13,356,and the sum of the squared differences between each observation and the mean is 812.
-Referring to Instruction 3-3,the variance of the number of vitamin supplements sold in this sample is ________.

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Definitions:

17-Year-Old Boy

A male human who is seventeen years of age, typically considered to be in the late stages of adolescence.

Erik Erikson

A psychoanalyst and developmental psychologist famous for his theory regarding the psychosocial development of individuals.

Integrity

The quality of being honest and having strong moral principles, or the state of being whole and undivided.

Generativity

The concern for establishing and guiding the next generation, often manifested through parenting, teaching, and community involvement.