Calculate thetstatistic for each slope, at significance level = 0.01.

Dependent Variable R^{2 slope std error t sta P value Differ from0}

Highest grade achieved .061 0.027 0.009 _ .008 ----

Reading grade equivalent .121 -0.070 0.018 __ .000----

Class standing .039 -0.006 0.003 __ .048---

Absence from school .071 4.8 1.7 ___ .006----

Grammatical reasoning .051 0.159 0.062 ___ .012 ---

Vocabulary .108 -0.124 0.032 ___ .000----

Hand-eye coordination .043 0.041 0.018 ___ .020---

Reaction time .025 11.8 6.66 ___ .080---

Minor antisocial behavior .025 -0.639 0.36 ___ .082----