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The diagram shows the electric field lines in a region of space containing two small charged spheres (Y and Z) .Then:
Risk-Free Asset
An investment with a certain return, usually with low returns, considered to have negligible risk, such as government bonds.
Expected Return
The anticipated value or profit gained from an investment over a specified period, considering all possible outcomes.
Portfolio
A compilation of investment vehicles including stocks, bonds, commodities, along with cash and near-cash items, which encompasses mutual funds and ETFs.
Standard Deviation
A statistic that measures the dispersion or variability of a dataset relative to its mean, used to quantify the amount of variation or dispersion.
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