Examlex
When formulating a hypothesis test, the null hypothesis should be written in such a way so as to minimize the probability of committing a Type I error.
IQ Scores
Standardized scores derived from intelligence tests that measure a person's cognitive abilities in relation to their age group.
Peter Principle
A principle suggesting that individuals in a hierarchy tend to be promoted until they reach a level of respective incompetence.
Opposite-Sex Twins
Twins of a multiple birth consisting of one male and one female sibling.
Fraternal Twins
Twins that develop from two different eggs fertilized by two different sperm cells, making them genetically unique, unlike identical twins.
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