Which of the Following Is Not a Method Used for Determining

question 18

Multiple Choice

Which of the following is not a method used for determining whether data are from an approximately normal distribution?

• A) Find the interquartile range, \(\mathrm { IQR }\), and standard deviation, \(s\), for the sample. Then \(\frac { \mathrm { IQR } } { s } \approx 1.3\).
• B) Compute the intervals \(\bar { x } \pm s , \bar { x } \pm 2 s\), and \(\bar { x } \pm 3 s\). The percentages of measurements falling in each should be approximately \(68 \% , 95 \%\), and \(100 \%\) respectively.
• C) Construct a histogram or stem-and-leaf display. The shape of the graph or display should be uniform (evenly distributed).
• D) Construct a normal probability plot. The points should fall approximately on a straight line.

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Definitions:

Eythrocytes

A misspelling of "Erythrocytes," which are red blood cells responsible for carrying oxygen from the lungs to the body's tissues and returning carbon dioxide from the tissues back to the lungs.

Leukocytes

White blood cells that are part of the immune system and defend the body against both infectious disease and foreign materials.

Red Bone Marrow

Red bone marrow is the soft tissue in the interior of bones where blood cells are produced, including red cells, white cells, and platelets.

Gestation

The period of development of the fetus from conception until birth.