Answer: RACE
Explanation:
That is the variable factor here is the RACE of the men in the study.
Answer: Opportunity cost
Explanation:
Opportunity cost is known to be the benefit an individual would have enjoyed if he or she had done not something else. It is the sacrifice made in choosing between two options when taking decision. For example: choosing between doing homework or watching a programme on television. Thus, if an individual decide to do the homework, watching a programme on television is the alternative forgone which is the opportunity cost.
Answer: factor analysis
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Spearman used factor analysis to come up with the idea of a general intelligence factor, or g factor. Factor analysis is a statistical method that uses many test items to measure abilities, and Spearman believed all these abilities were dependent on the g factor.
Answer: throughout the duration of the speech
Explanation: if visual aid will be used during a presentation, it should be used throughout the entire presentation in order to help you explain information more concisely and coherently which makes the presentation easy for you and enables the audience to learn easily and flow with the presentation.