2.4 + 2.3 + 2.2 + 2.1 2 1.9 1.8 + 7.5 8 8.5 Long Jump dwns ybH

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter7: Applying Fractions
Section7.6: Percents Problems
Problem 12WE
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Jumps 2012 How are Olympic performances in various
events related? The plot shows winning long-jump and
high-jump distances, in meters, for the Summer
Olympics from 1912 through 2012.

a) Describe the association.
b) Do long-jump performances somehow influence the
high-jumpers? How do you account for the relation-
ship you see?
c) The correlation for the plotted data is 0.913. If we
converted the jump lengths to centimeters by multi-
plying by 100, would that make the actual correlation
higher or lower?
d) What would you predict about the long jump in a year
when the high-jumper jumped one standard deviation
better than the average high jump?
2.4 +
2.3 +
2.2 +
2.1
2
1.9
1.8 +
7.5
8
8.5
Long Jump
dwns ybH
Transcribed Image Text:2.4 + 2.3 + 2.2 + 2.1 2 1.9 1.8 + 7.5 8 8.5 Long Jump dwns ybH
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