(a) Make a scatter diagram of the data. Then visualize the line you think best fits the data. (b) Would you say the correlation is low, moderate, or strong? Would you say the correlation is positive or negative? (c) Use a calculator to verify that Ex = 5817, x² = 5,645,271, y = 553, y2 = 59,835 and %3D Exy = 529,301.
(a) Make a scatter diagram of the data. Then visualize the line you think best fits the data. (b) Would you say the correlation is low, moderate, or strong? Would you say the correlation is positive or negative? (c) Use a calculator to verify that Ex = 5817, x² = 5,645,271, y = 553, y2 = 59,835 and %3D Exy = 529,301.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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2) Statistics
Transcribed Image Text:Tutorial Exercise
Can a low barometer reading be used to predict maximum wind
speed of an approaching tropical cyclone? For a random sample
of tropical cyclones, let x be the lowest pressure (in millibars) as
a cyclone approaches, and let y be the maximum wind speed (in
miles per hour) of the cyclone.
1004
975
992
935
990
921
y
40
100
65
145
67
136
(a) Make a scatter diagram of the data. Then visualize the
line you think best fits the data.
(b) Would you say the correlation is low, moderate, or
strong?
Would you say the correlation is positive or negative?
(c) Use a calculator to verify that
Ex = 5817, Ex² = 5,645,271, y = 553, y2 = 59,835 and
xy = 529,301.
Compute r.
As x increases, does the value of r imply that y should tend
to increase or decrease? Explain your answer.
Transcribed Image Text:Look at the following diagrams. Which diagrams show high linear correlation,
moderate or low linear correlation, or no linear correlation?
(a)
(b)
(c)
(a)
--Select---
(b)
--Select---
--Select---
Expert Solution
Step 1` (a)
The scatter plot can be drawn as:
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