rafa.araujo Posted October 20, 2018 Report Share Posted October 20, 2018 So this is my IA question "The relationship between countries’ GDP and the life expectancy of its population", what should I look at? My plan of investigation is: I am going to make a scatter plot and make of a line of best fit to see if there is a linear correlation between the data collected. After that, I will find the standard deviation in order to find out the dispersion of the data. With the data found, I will find the least-squares regression line to find out the equation of the line. After I will use Pearson’s Correlation Coefficient to find out the strength of the linear relationship between two variables. To finalize my investigation I will look at the Chi-squared test to see if the data used is dependent or independent. Should I look at anything else? Should I change anything from my plans? Thanks. Reply Link to post Share on other sites More sharing options...
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