Help with Statistics Homework
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(i) Which distribution is closest to normal?
The World Bank collects data on many variables related to world development for countries throughout the world. Two of these are Internet use (in number of users per 100 people) and life expectancy (in years). The data file is provided separately.
(i) You are given below the scatterplot of life expectancy (the response variable) versus internet use (the explanatory variable).
Describe the relationship. Is there an overall pattern? Do you see any deviation from that pattern?
(ii) A friend looks at the scatterplot and concludes that using the internet will increase the length of your life. Would you agree with her? Justify your answer.
(iii) You are now given a scatterplot of life expectancy versus internet use, but this time different symbols for European and non-European countries are used? Do you wish to modify your answer to question (iii). Explain.