A certain metal subjected to heating has the following temperatures in degree Celsius (y-axis) as a function of time in minutes (x-axis). Temperatures 25, 45, 65, 75, 85, 95 correspond respectively to time 5, 10, 20, 25, 28, 35. Find the value of the coefficient of correlation. The coefficient of correlation r is given by 0.99 O 0.95 O 0.90 0.89 «Σ-(ΣΣ» ΜΕΣ r2- (Σ 2][nΣ 2-(Σ»]
A certain metal subjected to heating has the following temperatures in degree Celsius (y-axis) as a function of time in minutes (x-axis). Temperatures 25, 45, 65, 75, 85, 95 correspond respectively to time 5, 10, 20, 25, 28, 35. Find the value of the coefficient of correlation. The coefficient of correlation r is given by 0.99 O 0.95 O 0.90 0.89 «Σ-(ΣΣ» ΜΕΣ r2- (Σ 2][nΣ 2-(Σ»]
MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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Question
FIRST PICTURE IS NO.9
1. question no. 1 is in the first picture
2. data for no. 2 is in the first picture.
QUESTION: The nature of the coefficient of
a. negative b. strong c. positive d. weak
3. question no. 3 is in the first picture second picture
![A certain metal subjected to heating has the following temperatures in degree Celsius (y-axis) as a function of time in minutes (x-axis).
Temperatures 25, 45, 65, 75, 85, 95 correspond respectively to time 5, 10, 20, 25, 28, 35. Find the value of the coefficient of correlation. The
coefficient of correlation r is given by
0.99
O 0.95
O 0.90
0.89
«Σ-(ΣΣ»
ΜΕΣ r2- (Σ 2][nΣ 2-(Σ»]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8b00a80b-0cea-48b5-891f-9a9beccbf082%2F71a4592e-ba53-4317-8eb1-767bc9966a80%2Fb11b0c_processed.png&w=3840&q=75)
Transcribed Image Text:A certain metal subjected to heating has the following temperatures in degree Celsius (y-axis) as a function of time in minutes (x-axis).
Temperatures 25, 45, 65, 75, 85, 95 correspond respectively to time 5, 10, 20, 25, 28, 35. Find the value of the coefficient of correlation. The
coefficient of correlation r is given by
0.99
O 0.95
O 0.90
0.89
«Σ-(ΣΣ»
ΜΕΣ r2- (Σ 2][nΣ 2-(Σ»]

Transcribed Image Text:In no. 9 estimate the temperature after 50 minutes. Use the regression of the form y = mx + b where
n
«Σ --(Σ.Σ»
n( Σ +2) - (Σ +)2
125.9
130.3
131.0
Ο 132.6
1 =
b=
and
Σ» Σ.) - (ΣΣΕ)
"Σ 2- (Σ 2
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