a) For what purpose bar charts can be used? Write down the criteria to determine whether pie-chart is a right choice.

b) In what situation will you use independent sample t-test for your data?

b) In what situation will you use independent sample t-test for your data?

Answer:Step-by-step explanation:a)A bar chart is used when you want to show a distribution of data points or perform a comparison of metric values across different subgroups of your data. From a bar chart, we can see which groups are highest or most common, and how other groups compare against the others. A pie chart is best used when trying to work out the composition of something. If you have categorical data then using a pie chart would work really well as each slice can represent a different category.

b)The Independent Samples t Test is commonly used to test the following: Statistical differences between the means of two groups. Statistical differences between the means of two interventions. Statistical differences between the means of two change scores.

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