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Distinguish between chemical and mechanical weathering.
Normal Distribution
A probability distribution that is symmetric around the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.
Standard Deviation
A gauge for the extent of variability or scatter among a group of numbers, highlighting the deviation of these values from their average.
Mean
The average of a set of numerical values, calculated by summing them together and then dividing by the number of observations.
Standard Normal
A normal distribution with a mean of 0 and a standard deviation of 1.
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