The mean mass:
"\\overline{m}=\\sum{\\frac{m_i}{n}}=\\frac{25+26+22+19+20+27+24+25}{8}=23.5"
The root mean mass:
"m_{rms}=\\sqrt{\\frac{25^2+26^2+22^2+19^2+20^2+27^2+24^2+25^2}{8}}" "=559.5"
Answer: 23.5; 559.5
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