Casio fx-CG10 Advanced Operation Manual page 29

Chapter 1: Polynomial Functions
Sample Solution—Empowerment of Bangladesh Women (continued)
b. Do the data appear to have a linear trend?
regression of the data, what is the correlation coefficient of your analysis?
The data appear to possibly have a linear trend, although it does not appear to
be a strong correlation. Let's perform a linear regression on the data to assess
the strength of the correlation.
To perform a linear regression:
From the scatterplot, press
linear equation is of degree 1, and for this reason, we press x to perform
a linear regression.
The calculator allows you to choose which form of a linear equation you
prefer, y = ax+b or y = a+bx. We chose the standard slope-intercept
form, y = ax+b, by pressing
Press
the scatterplot.
(DRAW) to draw the regression equation on the same axes as
After performing a linear
(CALC), then
(ax+b).
(X) The variable x in a