Life expectancy for all the different countries in the world ranges from a low of only 45.6 years (in Slerra Leone) to a high of 83.8 years (in Hong Kong), Life expectancies are clustered at the high end, with about half of all the countries having a life expectancy between about 74 and the maximum of 83,8 . A few countries, such as Slerra Leone, have a very low life expectancy, The full dataset is in AllCountries. Click here for the dataset associated with this question. Part 1 (a) What is the shape of the distribution of life expectancies for all countries? O Symmetric. O Skewed to the right. Skewed to the left. O None of these.

The distribution of life expectancies for all countries is skewed to the right. This means that while there are several countries with lower life expectancies (like Sierra Leone), a significant number of countries enjoy much higher life expectancies, which stretches the tail of the distribution toward the higher end. Picture a bell curve where most of the data points are clustered on the left side, but there are some outliers that reach way up to the right! To visualize this better, think of life expectancy as a marathon. Most runners finish in the middle of the pack (countries with average life expectancies), but there are a few speedy ones (countries with high life expectancies) who dash ahead and create that skewed effect. Meanwhile, the slower runners (countries with low life expectancies) add the needed contrast to the overall shape of the race!