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

question 133

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.
$$\begin{array} { | l | l | } \hline \text { Stem } & \text { Leaves } \\\hline \text { 1H } & 99 \\\hline \text { 2L } & 0023 \\\hline \text { 2H } & 567 \\\hline \text { 3L } & 034 \\\hline \text { 3H } & 568 \\\hline \text { 4L } & 1 \\\hline\end{array}$$ 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 first quartile of the number of vitamin supplements sold in this sample is _____________ .

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Definitions:

States of Matter

The distinct forms that different phases of matter take on, traditionally categorized as solid, liquid, gas, and plasma.

Atmospheric Conditions

Refers to the state of the atmosphere at a certain place and time, including factors such as temperature, humidity, wind speed, and air pressure.

Truck Air-Conditioning System

A system designed to cool the interior of a truck, providing comfort to the occupants.

Conditions Underhood

The environmental and operational conditions present in the area under a vehicle's hood, affecting engine and component performance.