The trend is not strong which could be due to not having enough data or this could represent the actual relationship between these two variables. What this says is that as fertility rate increases, life expectancy decreases. Graph 2.5.3: Scatter Plot of Life Expectancy versus Fertility Rateįrom the graph, you can see that there is somewhat of a downward trend, but it is not prominent. Note: Always start the vertical axis at zero to avoid exaggeration of the data. The vertical axis needs to encompass the numbers 70.8 to 81.9, so have it range from zero to 90, and have tick marks every 10 units. The charts I provided are like those provided in the paper your mentioned. The scatter plots below exhibit computer-generated. The horizontal axis needs to encompass 1.1 to 3.4, so have it range from zero to four, with tick marks every one unit. beginner - The charts are scatter plots / correlation plots: its positively correlated if the line goes from bottom left to upper right and negatively correlated if it goes upper left to lower right. We consider some further examples of data sets to get some understanding of the correlation coefficient. In this case, it seems to make more sense to predict what the life expectancy is doing based on fertility rate, so choose life expectancy to be the dependent variable and fertility rate to be the independent variable. Sometimes it is obvious which variable is which, and in some case it does not seem to be obvious. To make the scatter plot, you have to decide which variable is the independent variable and which one is the dependent variable. \): Life Expectancy and Fertility Rate in 2013įertility Rate (number of children per mother)
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