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categoryإحصاء schoolبكالوريوس event_available2026-07-13

السؤال

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Refer to the data below which contains the percentage change (X) in a stock market index over the first five trading days of the year and percentage change (Y) in the index over the whole year. Complete parts a and b. (X) (Y) 1.4 0.1 -0.2 2.9 2.1 -1.8 -1.3 5.7 -1.5 1.4 1.5 14.9 -9.2 19.7 20.3 -3.6 27.8 22.5 2.2 11.7 26 -4.2 -4.7 20.3 -0.4 -0.2 a. Estimate the linear regression of Y on X. (Round to four decimal places as needed.) b. Provide interpretations of the intercept and slope of the sample regression line. % over the whole year. If there is a zero percent For a one percent over the first five trading days of the year, estimates would predict a change of change over the first five trading days of the year, estimates would predict a change of % over the whole year.

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