Normal Distribution - Amount of Sleep
Application of normal distribution in analyzing sleep data.
David Brown
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Statistical Concepts Name: __________________________
1
180215
Normal Distribution - Amount of Sleep
Do we humans get enough amount of sleep we need?
Here is what some experts are saying...
"There is increasing evidence that there is a very strong relationship between sleep quality and
physical and mental health..." A national survey of 31,044 adults revealed a link between
insomnia and other sleeping problems with high blood pressure, heart failure, anxiety, and
depression. Experts say that there is no evidence yet to indicate that acquiring more sleep will
improve medical conditions, but some studies have shown that more sleep makes teenagers do
better in school.
The US National Sleep Foundation suggests that an adult needs seven to nine hours of sleep a
night. The Foundation conducted a survey in 2012 that suggested about 75% of Americans had
sleeping problems, with one-third being so sleepy during the day that it affected their lives and
activities.
On the other hand, when asked if everyone needed 8 hours of sleep each night, some experts
stated: "It's nonsense. It's like saying everybody should have size eight shoes, or should wear
Medium size clothes... However, there is a normal distribution with the average sleep length
seven and a quarter hours." Many people report their sleeping hours more or less than the
average, and that the determining factor for a required amount of sleep should be whether the
person feels fresh and alert during the day, the same experts say.
While amount or quality of sleep undergoes a wide variety of changes during the human life
span (based primarily upon age and life style), all aspects of sleep, at any given age, have a
relatively normal, bell-shaped distribution.
1
180215
Normal Distribution - Amount of Sleep
Do we humans get enough amount of sleep we need?
Here is what some experts are saying...
"There is increasing evidence that there is a very strong relationship between sleep quality and
physical and mental health..." A national survey of 31,044 adults revealed a link between
insomnia and other sleeping problems with high blood pressure, heart failure, anxiety, and
depression. Experts say that there is no evidence yet to indicate that acquiring more sleep will
improve medical conditions, but some studies have shown that more sleep makes teenagers do
better in school.
The US National Sleep Foundation suggests that an adult needs seven to nine hours of sleep a
night. The Foundation conducted a survey in 2012 that suggested about 75% of Americans had
sleeping problems, with one-third being so sleepy during the day that it affected their lives and
activities.
On the other hand, when asked if everyone needed 8 hours of sleep each night, some experts
stated: "It's nonsense. It's like saying everybody should have size eight shoes, or should wear
Medium size clothes... However, there is a normal distribution with the average sleep length
seven and a quarter hours." Many people report their sleeping hours more or less than the
average, and that the determining factor for a required amount of sleep should be whether the
person feels fresh and alert during the day, the same experts say.
While amount or quality of sleep undergoes a wide variety of changes during the human life
span (based primarily upon age and life style), all aspects of sleep, at any given age, have a
relatively normal, bell-shaped distribution.
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Subject
Statistics