Examlex
According to Piaget's theory, which statement is not true of children in the preoperational stage?
Mean
The average of a set of numbers, calculated by adding all the numbers together and then dividing by the count of those numbers.
Standard Deviation
Standard deviation is a measure that quantifies the amount of variation or dispersion of a set of data values, used to understand how spread out the values are from the mean.
Mean Speed
The average velocity of an object over a defined period of time.
Standard Deviation
A measure of the amount of variation or dispersion of a set of values; a low standard deviation means that the values tend to be close to the mean, while a high standard deviation means they are spread out over a wider range.
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