Answer:
Sleep apnea is a condition in which the patient or a person lost breathing during sleep. This occurs around 10 to 20 seconds or this period can be longer. It sometimes occurs during an arousal state. The person who is suffering from this problem may not aware that he/she has sleep apnea. It happened and they realize when they feel fatigued during their whole day. Many times person start treatment at the complaints of their partner. When they explain that they snored very loudly and in between for a short period they stop breathing. It is common among obese people and they snore very loud.
- The sleep apnea is of two types:
- The obstructive sleep apnea
- The central sleep apnea
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Since Shalane asks each student to indicate whether she or he is an athlete; then, the students complete a life satisfaction survey. This example shows that athleticism is a <u>nominal</u> variable.
Let's understand what a nominal variable is.
<h3>Nominal variable</h3>
Nominal variable is known to be used in statistical analysis. It is used to place people into various groups.
Nominal variable is also known as categorical variable. It is used when people fill out a survey.
Since Shalane tends to know who is an athlete, athleticism is a nominal variable.
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