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What is the level of measurements for year of birth?
It is an interval scale. It is not a ratio scale, the next higher level, because the zero is arbitrary and not unique from one calendar to another.
The time interval of 365.242 days is defined as the?
Tropical year
Why does adding birth year to age in current year equal current year?
Sometime in the next calendar year after your birth year, you will have your first birthday. Birth year + 1 = the next year Birth year + 2 = the year after that This pattern will remain for the rest of your life. The year of your 20th birthday will be 20 years after your birth. Repeat, as necessary, until one of the years is the current one.
What is the longest time interval between the birth of twins?
The longest documented time interval between the birth of twins is 87 days. This unusual case occurred in 2012 when a woman in Ireland gave birth to one twin prematurely, and the second twin was delivered nearly three months later. Such extended intervals are extremely rare and typically involve medical intervention to prolong the pregnancy of the second twin.
Differentiate a closed interval from an open interval?
Open interval does not include its end points while closed interval includes
