Examlex
You want to study whether or not the use of computers in the classroom for elementary students has an effect on performance. Explain in some detail how you would ideally set up such an experiment and what threats to internal and external validity there might be.
Local Currency
The currency that is legally accepted in a particular country or jurisdiction, used for the settlement of financial transactions within its borders.
S&P 500
A U.S. stock market index reflecting the market value of 500 major companies with common stock on the NYSE or NASDAQ.
Correlation
A statistical measure that describes the degree to which two variables move in relation to each other.
Standard Deviation
A statistical measure that represents the dispersion or variability of a data set or investment returns around the mean.
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