• 2021 December(E23) Math Question 35

    Statistics

    - Mean, Median

    Statistics (Mean, Median, Mode, Standard Deviation)
    Choice C
    Cost  of  doll=$6Cost\; of\; doll=\$6
    Mean  of  4  items={15}{4}=$3.75Mean\; of\; 4\; items=\frac\{15\}\{4\}=\$3.75
    ∴$6−$3.75=$2.25\therefore \$6-\$3.75=\$2.25

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