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In issue 49 of Stats: The Magazine for Students of Statistics, Schuyler Huck presents a dataset of 100 ordered pairs in which 25 of them are (17, 1), 25 are (18, 2), 25 are (19, 3), and 25 are (20, 4). a. Without doing much formal calculation, find the value of r and the slope, m, of the least-squares regression line. Give the answers as whole numbers. r = m = b. Now, suppose someone adds the 101" point to the dataset: the ordered pair (1, 20). Predict the new value of r and the slope of the regression line. Give the answers to 4 decimal places. r= m =

In issue 49 of Stats: The Magazine for Students of Statistics, Schuyler Huck presents a dataset of 100 ordered pairs in which 25 of them are (17, 1), 25 are (18, 2), 25 are (19, 3), and 25 are (20, 4). a. Without doing much formal calculation, find the value of r and the slope, m, of the least-squares regression line. Give the answers as whole numbers. r = m = b. Now, suppose someone adds the 101" point to the dataset: the ordered pair (1, 20). Predict the new value of r and the slope of the regression line. Give the answers to 4 decimal places. r= m =

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
Problem 8E
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In issue 49 of Stats: The Magazine for Students of Statistics, Schuyler Huck presents a dataset of 100 ordered pairs in which 25 of them are (17, 1), 25 are (18, 2), 25 are (19, 3), and 25 are (20, 4). a. Without doing much formal calculation, find the value of r and the slope, m, of the least-squares regression line. Give the answers as whole numbers. r = SU r = m = b. Now, suppose someone adds the 101 point to the dataset: the ordered pair (1, 20). Predict the new value of r and the slope of the regression line. Give the answers to 4 decimal places. m =
Transcribed Image Text:In issue 49 of Stats: The Magazine for Students of Statistics, Schuyler Huck presents a dataset of 100 ordered pairs in which 25 of them are (17, 1), 25 are (18, 2), 25 are (19, 3), and 25 are (20, 4). a. Without doing much formal calculation, find the value of r and the slope, m, of the least-squares regression line. Give the answers as whole numbers. r = SU r = m = b. Now, suppose someone adds the 101 point to the dataset: the ordered pair (1, 20). Predict the new value of r and the slope of the regression line. Give the answers to 4 decimal places. m =
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