A score was derived from looking al how the wall of the left

A score was derived from looking al how the wall of the left ventricle moved while the heart was heating (details in CASS 119811). A score of 5 was normal; the larger the score, the worse the motion of the left ventricular wall looked. The relationship to operative mortality is given here. What do you conclude about the relationship? Iliad is, if you were writing a paragraph to describe this finding in a medical journal, what would you say? Compute tin; chi-square statistic for trend. Using Table A.3, give (lie strongest possible statement about the p-value. b. Compute, where not given, the percentage of operative mortality, and plot the percentage for the different categories using equally spaced intervals. The usual chi-square statistic (with k - 1 degree s of freedom) is given with its p-value. When possible, from Table A.3 or the chi-square values, tell which statistic is more highly significant (has the smallest p-value). Its your figure in (b) suggest why? Table AJ Critical Values (Percentiles) for the Chi-Square Distribution For each degree of freedom (d.f.) in the first column, the table entries are tlie critical values for the upper one-sided significance lewis in the column (leadings or, equivalently, the percentiles for the corresponding percentages.

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