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Continue Learning about Math & Arithmetic

What does the Q stand for in Susie Q?

It doesn't mean anything in particular, it was used this way to sound good in the song.


What does it mean to place an emphasis?

To place emphasis on something, you: * highlight it * make it stand out from the rest * give more importance to it


What does base to the zero power mean?

If something is to the 0 power it is 1 because you arent multiplying anything.


What does easy as falling on a log mean?

Nothing. It's "easy as falling off a log," and it means just what it seems to mean -- something is just as easy as it is to fall off a round log.


Why is it that only one normal distribution table is needed to find any probability under the normal curve?

Anything that is normally distributed has certain properties. One is that the bulk of scores will be near the mean and the farther from the mean you are, the less common the score. Specifically, about 68% of anything that is normally distributed falls within one standard deviation of the mean. That means that 68% of IQ scores fall between 85 and 115 (the mean being 100 and standard deviation being 15) AND 68% of adult male heights fall between 65 and 75 inches (the mean being 70 and I am estimating a standard deviation of 5). Basically, even though the means and standard deviations change, something that is normally distributed will keep these probabilities (relative to the mean and standard deviation). By standardizing these numbers (changing the mean to 0 and the standard deviation to 1) we can use one table to find the probabilities for anything that is normally distributed.