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A researcher investigating 'Pygmalion in the classroom' measured teachers' perceptions of male and female students' mathematical abilities. She wanted to test whether teachers perceived males as being better at maths by comparing teachers' mean ratings of 97 male and female students. Based on the output, what action should the researcher take before testing whether the mean teacher perceptions are different for male and female students?
Stock Price Declines
A situation where the market value of a company's shares decreases over a period of time.
Short Calls
An options trading strategy where an investor sells call options on an underlying asset they do not own.
Option Clearing Corporation
The organization responsible for ensuring the proper settlement of options contracts and mitigating counterparty risk in the options market.
Post Margin
The amount of collateral a participant must deposit with a clearinghouse to cover potential future losses on positions.
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