Question

Please help me to solve this based on the inference that I got and graphs.

This is the inference that I got :

The parameter of interest is mu1-mu2 : the mean difference of two independent samples. The average of the difference in points between the students who sit in the front of the classroom and the students who sit in the back of the classroom.

Does the boxplot (or do the boxplots) show any outliers? Answer this question in one sentence and identify any outliers if they are present.+ Considering your answers to parts (iii) and (v). is inference appropriate in this case? Why or why not? Defend your answer using the graphs in two to three sentences.+

Answer 1

The parameter of interest is mu1-mu2 : the mean difference of two independent samples.

As shown in the above img of box plot the front GPA has higher median than back GPA and even the distribution of the central tendency is aslo higher in front GPA as compared to back GPA and hence we can conclude here that mean difference is significant when we compare two grous.

Even by looking at the box plots Front GPA has an outlier which is shown by a point outside the bottom horizontal line of the box plot while back GPA doesn't have any outlier.

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