Teacher Maria is interested in knowing iF stodent performance varies sighificantly. In her previous te aching years, it is common to encounter some extreme uass utandings and dispourities in the...

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Extracted text: Teacher Maria is interested in knowing iF stodent performance varies sighificantly. In her previous te aching years, it is common to encounter some extreme uass utandings and dispourities in the roores. She thinks that it's not the case variance oF lass standing is less than the usual ( 100 sauared points.) now and the what are the Ho and Hoa ?