The correlation coefficient r between the size of a lake in square miles, x, and the yearly number of registered boaters, y, is 0.743. what percent of the variation in the number of yearly boaters can be explained by differences in lake sizes? a.74.3% b.55.2% c.44.8% d.37.2% algebra

The variation in any sample group is simply the square of the correlation coefficient, that is:

variation = r^2

Therefore given an r value, we can simply directly calculate for variation percentage.

variation = (0.743)^2

variation = 0.552 or 55.2%

B. 55.2%

step-by-step explanation:

this woman was an important writer and propagandist during the american revolution. she was a member of the committee of correspondence (in fact the committee was formed in her home) and was an advisor to many of the revolutionary leaders, including george washington and john adams. who was this revolutionary woman?

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