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By Hand: Subjects were trained to respond to a 12-inch visual stimulus and then were tested...

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Basic Math

By Hand: Subjects were trained torespond to a 12-inch visual stimulus and then were tested onstimuli of different sizes (9, 10, 11, 12, 13, 13, 14, and 15inches). The response measure was the degree to which the subjectsresponded on the first test trial. There were n = 14 subjects ineach group. The means for the a = 7 groups are as follows:

9 in      10in    11 in    12 in    13in    14 in    15 in

1.52    2.64     4.28    3.86     3.86    2.79     3.70

Conduct an analysis of the linear andthe quadratic trends (the within-groups mean square was 5.84). Plotthe predicted group means and the actual group means. What do youconclude?

Answer & Explanation Solved by verified expert
4.3 Ratings (700 Votes)
lmformula y xResiduals1 2 3 4 5 6 710279 01371 12736 06243 03950 09043 02236CoefficientsEstimate Std Error t value PrtIntercept 04843 20846 0232 0826x 02293 01714 1338 0238Residual standard error 09067 on 5 degrees of freedomMultiple Rsquared 02637 Adjusted Rsquared 01164Fstatistic 179 on 1 and    See Answer
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