math215 Lecture Notes - Lecture 6: Confidence Interval, Total Variation, Prediction Interval
Document Summary
Solutions to unit 6 self test: a. , as well as the answers to subsequent questions, we suggest forming the following table to work out. X y s sxx s sxy and. X 27 y 317 x2136. 5 y2 18397 xy 1577. S sxy xy ( x)( y) n. S syy y2 ( y)2. Slope a y bx . 6835: the figure below shows a scatter diagram. The six points displayed are plots of the six sets x y of and values observed in the sample. The regression line is the straight line shown. This straight line has been plotted by computing when. , as follows: x 2 : 7 . 7501 x 7 : 7 . This result suggests a positive relation between the degree of pollution and the number of patients being admitted for acute respiratory problems: the slope. The df n 2 6 2 4 this is a right-tailed test with the one tail having an area of.
