Examlex
Which of the following concepts underlies all the others: ionization energy, effective nuclear charge, atomic size.
Estimate
A rough calculation or judgment of the value, number, quantity, or extent of something.
Mean Difference
The average difference between two sets of data, often used to compare the mean values of two samples or measurements.
Matched Pairs
A study design in which each subject is paired with a similar subject, usually to control for certain variables.
Independent Samples
Two or more groups of data that are not related or do not influence each other, often used in comparative experiments.
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