Examlex
When using queries with EXISTS and NOT EXISTS,the processing of the associated SELECT statements must be nested.
75th Percentile
The value below which 75% of the data points in a dataset lie.
Q3
The third quartile in a data set, representing the value below which 75% of the data falls.
Q1
Stands for the first quartile in a data set, which is the median of the lower half of the data set.
Q2
Often refers to the median in the context of quartiles in descriptive statistics, which divides a data set into two equal parts.
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