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March 27th, 2015, 11:28 AM   #1
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Temperature linear regression calculator

task 4.222
The table below shows the resistance R(t) measured ohm in a copper wire with the temperature measured in Celsius

T (degrees celsius) :0 16 22 36 49 60 75
R(t) (ohm): 56 59.5 60.8 63.9 66.7 69 72.3

D) How many degrees has the temperature risen when resistance has risen with 1 ohm
The book says the answer is 4.6 degreees but i don't know how the answer is found?
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March 30th, 2015, 06:15 AM   #2
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Resistance has risen TOTAL with 72.3 - 56 = 16.3 ohm when temperature has risen TOTAL with 75 degrees.
So if 16.3 ohm ~ 75 degrees,
then 16.3 times lesser 1 ohm ~ 75 ÷ 16.3 ≈ 4.6 degrees.
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