Casio fx-82MS Manual Book page 37

32
Mastering the Calculator using the Casio fx-82MS
For each banana you have to put in both numbers.
To put in the first set of numbers, press the following keys:
is used for the 1st variable
is used for the 2nd variable
Continue in this manner
After you have input all the numbers.
The display should read n = 10
To find the linear regression equation in the form
y = a + b x
you need to find the value of a and b. These keys are found under
Press
Press
∴
the equation is y = 0.3651 + 0.0430 x
To find the correlation coefficient press
r = 0.1928
There is not a high correlation between the thickness of bananas and the length of bananas
tested.
The calculator will also give you other statistics about this sample. Use
mean thickness (1.055mm) or the standard deviation (0.64mm).
: x
15.94
a is 0.3651
b is 0.0430
to get the