Question

please please give me this questions answer​

Answer 1

Answer:

166.4

Step-by-step explanation:

Median

140-150 : 145

150-160 : 155

160-170 : 165

170-180 : 175

180-190 : 185

190-200 : 195

mean value when median is given

(mean value) = $\frac{m_1x_1+m_2x_2+...+m_nx_n}{x_1+x_2+...+x_n}$ ( $m$ is median for $x$ respectively. )

$145*5+155*10+165*18+175*9+185*6+195*2$

$=5*(29*5+31*10+33*18+35*9+37*6+39*2)$

$=5*(145+310+594+315+222+78)$

$=5*1664$

$=8320$

$5+10+18+9+6+2$

$=50$

$\frac{8320}{50} =\frac{1664}{10} =166.4$

∴ $166.4$