Lme Ihedian is $12.3,$ calculate the quartile deviation. 13. Calculate Bowley's coefficient of skewness for the following data. $X$ $3$ 85 90 95 $1O0$ $1O5$ $110$ 115 $120$ 125 15 18 25 19 15 7 13 16 22 14. From the following data, compute quartile deviation and coefficient of skewness based on quartiles : Size $5-7$ $8-10$ $11-13$ $14-16$ $17-19$ $re9dency$ 14 24 38 20 4 [Delhi Univ. B.Com. (P) $2001\right)$ $15.$ Calculate Bowley's coefficient of $skewnesS$ from the following distribution : Age below $v17$ $yearS\right)$ 25 320 0 35 460 5 45 50 55 No. of employees 8. 40 80 92 100 [Delhi Univ. B.Com. (P) $2004$

15. Calculate Bowley's coefficient of skewness from the following $dist\pi ibation$ $|$ Age below (in $0$ $25$ $30$ $35$ $40$ $45$ $50$ $55$ No. of employees $8$ $20$ $40$ $65$ $80$ $92$ $100$ [Delhi Univ. B.Com. (P) 2004

Moment coefficient of skewness $=$ $\dfrac {43} {\sqrt{{a_{2}}^{3}} }=\dfrac {-31} {\sqrt{\left(15\right)^{3}} }=-\dfrac {31} {5809}=-0.53$ Example $2$ first four moments of $a$ $-$ distribution $abo4$ the value $5$ of the var are $2$ $20$ $10$ and $50$ Calculate the moment coefficient of skewness.