Posted by **Jordan** on Monday, September 17, 2007 at 7:33pm.

would you expect a positive, a negative, or no association between the number of hours of daylight during a day and the number of hours of darkeness?

- Algerba -
**bobpursley**, Monday, September 17, 2007 at 7:41pm
Generally, a negative association. When one is increasing, the other is decreasing, except in the very Northern or Southern latitudes where there is no sunrise or sunset for half the year.

- Algerba -
**Jordan**, Monday, September 17, 2007 at 7:43pm
Thanks BobPursley!

- Algebra -
**Ms. Sue**, Monday, September 17, 2007 at 7:42pm
All of the hours of a day are either daylight or darkness. In the Northern Hemisphere we have long nights and short days in the winter. We have short nights and long days in the summer.

What kind of association is this?

- Algebra -
**Jordan**, Monday, September 17, 2007 at 7:46pm
A Negative Association?

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