STA302H1 Midterm: UTSG STA 302 exams04
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1: olympic gold medal performances in track and eld improve over time. A regression was run with dependent variable longjump, the winning distance in the long jump (in inches), and independent variable year, the year the olympics was held after 1900 (counting 1900 as year 0). Data from the olympics held from 1900 through 1984 were used (some olympics were missed during the world wars). Questions based on this output are on the next 2 pages. Construct an appropriate 95% interval for the predicted winning long jump distance in 1968. Continued: (8 marks (2 marks each)) each of the following plots is a scatterplot of a dependent variable versus an independent variable. We wish to study further the relationship between the two variables. Indicate an appropriate linear regression model based on the plot. X (this question continues on the next page. )
