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Simple regression was employed to establish the effects of childhood exposure to lead. The effective sample size was about 122 subjects. The independent variable was the level of dentin lead (parts per million). Below are regressions using various dependent variables.   (a) Calculate the t statistic for each slope, at significance level = 0.01. (Round your answers to 2 decimal places. Negative values should be indicated by a minus sign.)

Simple regression was employed to establish the effects of childhood exposure to lead. The effective sample size was about 122 subjects. The independent variable was the level of dentin lead (parts per million). Below are regressions using various dependent variables.   (a) Calculate the t statistic for each slope, at significance level = 0.01. (Round your answers to 2 decimal places. Negative values should be indicated by a minus sign.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Simple regression was employed to establish the effects of childhood exposure to lead. The effective sample size was about 122 subjects. The independent variable was the level of dentin lead (parts per million). Below are regressions using various dependent variables.
 
(a) Calculate the t statistic for each slope, at significance level = 0.01. (Round your answers to 2 decimal places. Negative values should be indicated by a minus sign.)

 
Estimated Dependent Variable R2 Standard Error tcalculated p-value Differ from 0? Slope Highest grade achieved 0.059 -0.029 0.009 0.002 Reading grade equivalent 0.114 -0.072 0.019 0.000 Class standing 0.059 -0.009 0.008 0.263 Absence from school 0.078 2.700 1.550 0.084 Grammatical reasoning 0.069 0.185 0.079 0.021 Vocabulary 0.114 -0.299 0.083 0.000 Hand-eye coordination 0.043 0.099 0.035 0.005 Reaction time 0.016 10.200 9.340 0.277 Minor antisocial behavior 0.040 -0.414 0.399 0.302
Transcribed Image Text:Estimated Dependent Variable R2 Standard Error tcalculated p-value Differ from 0? Slope Highest grade achieved 0.059 -0.029 0.009 0.002 Reading grade equivalent 0.114 -0.072 0.019 0.000 Class standing 0.059 -0.009 0.008 0.263 Absence from school 0.078 2.700 1.550 0.084 Grammatical reasoning 0.069 0.185 0.079 0.021 Vocabulary 0.114 -0.299 0.083 0.000 Hand-eye coordination 0.043 0.099 0.035 0.005 Reaction time 0.016 10.200 9.340 0.277 Minor antisocial behavior 0.040 -0.414 0.399 0.302
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