TAMIL NADU OPEN UNIVERSITY
TAMIL NADU OPEN UNIVERSITY
TAMIL NADU OPEN UNIVERSITY
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<strong>TAMIL</strong> <strong>NADU</strong> <strong>OPEN</strong> <strong>UNIVERSITY</strong><br />
Chennai - 15<br />
School of Social Sciences<br />
SPOT ASSIGNMENT<br />
COURSE – B.COM COURSE CODE AY 2010-2011 &<br />
CY 2011<br />
Business Statistics BCO - 24<br />
Time: 1 Hour Total Marks: 25<br />
Answer any two of the following:<br />
1. Calculate the standard deviation of the following distribution.<br />
Age : 20-25 25-30 30-35 35-40 40-45 45-50<br />
No.of persons : 170 110 80 45 40 35<br />
fPNo nfhLf;fg;gl;Ls;s gutYf;F jutpyf;fk; fzf;fpLf.<br />
taJ : 20-25 25-30 30-35 35-40 40-45 45-50<br />
egh;fspd; :<br />
170 110 80 45 40 35<br />
vz;zpf;if<br />
2. Calculate the coefficient of correlation between the values of X and Y given below.<br />
X : 78 89 96 69 59 70 68 61<br />
Y : 125 137 156 112 107 136 123 108<br />
Use 69 as working mean for X and 112 for Y.<br />
fPNo nfhLf;fg;gl;Ls;s tptuq;fspypUe;J X kw;Wk; Y khwpfSf;fpilNa cs;s<br />
xl;Lwtpidf; fzf;fpLf.<br />
X : 78 89 96 69 59 70 68 61<br />
Y : 125 137 156 112 107 136 123 108<br />
fzf;fpLk; ruhrhpahf X khwpf;F 69-k; Y khwpf;F 112-k; vLj;Jf;nfhs;f.<br />
3. From the following data calculate price index number for 2000 with 1990 as base by –<br />
i) Laspeyre’s method ii) Paasche’s method
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