Question

cứu em mn ơi em gấp lắm rồi

Answer 1

a) \(\overline{X}=\dfrac{6.5+7.8+8.4+9.2+10}{5+8+4+2+1}=7,3\)

\(n=20\Rightarrow\dfrac{n}{2}=10\)

\(\Rightarrow Q_2=7\)

\(\dfrac{n}{4}=5\Rightarrow Q_1=6\)

\(\dfrac{3n}{4}=15\Rightarrow Q_3=8\)

\(m_0=7\)

b) \(\overline{X}=\dfrac{26.10+27.8+28.4+29.2+30}{10+8+4+2+1}=27,04\)

\(n=25\Rightarrow\dfrac{n}{4}=6,25\Rightarrow Q_1=26\)

\(\dfrac{n}{2}=12,5\Rightarrow Q_2=27\)

\(\dfrac{3n}{4}=18,75\Rightarrow Q_3=28\)

\(m_0=26\)