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They are symmetric with scores more concentrated in the middle than in the tails Normal distributions are sometimes described as bell shaped Examples of
This distribution describes many human traits All Normal curves have symmetry, but not all symmetric distributions are Normal ? Normal distributions are
On the other hand, counting the number of heads/tails in a collection of coin tosses is not continuous (it is discrete) because the result can only be an
Behavioral data in a population tend to be normally distributed, meaning the data are symmetrically distributed around the mean, the median, and the mode, which
approximately normally distributed with a mean of 72 4 degrees (F) and a standard deviation of 2 6 degrees (F) Q1] Sketch the normal curve by hand here
Many populations have distributions that can be fit very The statement that X is normally distributed with captures upper-tail area 01
numbers used to describe what is a typical case value or how much variability is A curve like the one in Figure 4 1, which has a tail
center and less frequent scores fall into the tails Central tendency means most scores(68 ) in a normally distributed set of data tend to cluster in the
The normal probability distribution is the most commonly used probability There are many normal distributions, and each variable X which is nor-