Acorrelation is considered to be negative if both variables decrease change in one variable is unrelated to change in the other variable one variable increases while the other variable decreases both variables increase

Answer;

Answer; -one variable increases while the other variable decreases

Explanation;

-A correlation is considered to be negative if one variable increases while the other variable decreases. A correlation is considered to be zero if there is no connection between the variables.

-A correlation does not indicate that one variable causes the other to occur; rather, it indicates that there is a relationship between the two variables.

< 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⭐