Examlex
The fact that the personal experiences of many theorists helped to shape their views and ideas of personality illustrates the idea that psychology is empirical.
Weighted Mean
The mean of a data set that accounts for the importance or weight of each value.
Population Parameter
A numerical value that describes a characteristic of an entire population, such as its mean or standard deviation.
Sample Statistic
A numerical measure that describes some characteristic of a sample, such as the sample mean or sample standard deviation.
50th Percentile
Also known as the median, it is the value below which 50% of the observations in a group of data fall.
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