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

question 125

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 standard deviation of the number of vitamin supplements sold in this sample is ________.

---

Definitions:

Municipal Bonds

Debt securities issued by municipalities to finance public projects, such as building schools or highways, generally offering tax-exempt interest payments to investors.

Tax Advantage

Financial benefits that accrue due to preferential tax treatment of certain investments or transactions.

Corporate Bond

A type of debt security issued by corporations to raise capital, where the corporation promises to repay the principal along with interest at a specified future date.

Municipal Bond

A debt security issued by municipalities to finance public projects, such as roads and schools, typically offering tax-free interest payments to investors.