The following table shows the heights (in cm) of 50 girls of Class 10 of a school Find the - Maths - Statistics

Question

The following table shows the heights (in cm) of 50 girls of Class
10 of a school Find the mean data by step deviation method
Heights (in cm) No of Girls
120-130 2
130-140 8
140-150 12
150-160 20
160-170 8

Rishabh Mittal · Accepted Answer

<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/ck-files/ck_5608a9669e21a%20jpg"
style="width: 882px; height: 215px;">
Here assumed mean , a=145di=xi-a=xi-145ui=dih=di10∑fi=50∑fiui=24h=10Mean=a+∑fiui∑fi×h=145+2450×10=145+4
8=149 8   ANS Mean is 149 8

The following table shows the heights (in cm) of 50 girls of Class 10 of a school. Find the mean data by step deviation method. Heights (in cm) No. of Girls 120-130 2 130-140 8 140-150 12 150-160 20 160-170 8

The following table shows the heights (in cm) of 50 girls of Class 10 of a school. Find the mean data by step deviation method.
Heights (in cm) No. of Girls
120-130 2
130-140 8
140-150 12
150-160 20
160-170 8