What is absolute deviation and how do i solve this problem?

The mean absolute deviation means taking the actual value of each data term.  For example: -7 would be 7.  10 would be 10.  26 would be 26.  -98 would be 98.  Nothing can be negative.  Then, after you find the absolute deviation of each term, you can find the mean of the data set.

Step-by-step explanation:

Seventh grade: 183 + 187 + 204 + 215 + 196 = 985  There are 5 terms in the set so... 985 ÷ 5 = 197  The mean absolute deviation of the 7th grade data set is 197.

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐