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Question description

Many variables in medicine follow a normal distribution where there are approximately an equal number of values below the mean as above the mean. One variable that would probably follow a normal distribution would be the hemoglobin and hematocrit of one’s blood count. According to Clinical Methods, “the normal Hb level for males is 14 to 18 g/dl; that for females is 12 to 16 g/dl. When the hemoglobin level is low, the patient has anemia. And erythrocytosis is the consequence of too many red cells; this results in hemoglobin levels above normal. The normal hematocrit for men is 40 to 54%; for women it is 36 to 48%.” This variable is very important because everyone has a different range, for that specific person. For example, if one has a reason as to why they are losing blood that person mean of hemoglobin and hematocrit would drop.

Another variable that would follow a normal distribution would be body temperature. Normal human body temperature, also known as normothermia or euthermia, is the typical temperature range found in humans (Links to an external site.)Links to an external site.. The normal human body temperature range is typically stated as 36.5–37.5 °C (97.7–99.5 °F) (Wikipedia) Again, there is a “normal” temperature number, but everyone’s changes, for example if one has a fever, or they are hypothermic the mean would be completely altered, changing the normal distribution. The difference between fever and hyperthermia is the underlying mechanism. Different sources have different cut-offs for fever, hyperthermia and hyperpyrexia.

The two data sets that I used hemoglobin and hematocrit and body temperature, the two variables that would be likely to have a larger standard deviation would be the hemoglobin and hematocrit because every day the levels changed, and not one single person is at a consent number daily. But with temperature the mean would stay around the same since ones’ body temperature has to be at a level to be able to sustain life.

Billett HH. Hemoglobin and Hematocrit. In: Walker HK, Hall WD, Hurst JW, editors. Clinical Methods: The History, Physical, and Laboratory Examinations. 3rd edition. Boston: Butterworths; 1990. Chapter 151. Available from: https://www.ncbi.nlm.nih.gov/books/NBK259/ (Links to an external site.)Links to an external site.

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