Descriptive statistics and Independent samples

Descriptive statistics and Independent samples t-testObtain descriptive statistics and graphsfor ‘lifeexpect’separately for those with levels of the electoral democracy index higher than 0.5(use‘electdemocindex’to create the new variable)and those with lower levels. In order to do that, create a new variable called ‘elecind exdummy’ that takes the value 0 if ‘elecdemocindex’< 0.5, and 1 if ‘elecdemocindex’> 0.5. Compare measures of central tendency and variation for ‘lifeexpect’between the two groups of ‘elecindexdummy’. What do you observe? Obtain a t-test for the difference in life expectancy at birth between the two categories of ‘elecind exdummy’. What do you conclude? Be clear and rigorous when you perform the test and present your results. For instance, remember to state the null hypothesis, set a level of statistical significance (i.e. 0.05 or another conventional level of significance) and use the correct terminology.

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