Question

In: Statistics and Probability

Absences Grade (Marks) 0 89.2 1 86.4 2 83.5 3 81.1 4 78.2 5 73.9 6...

Absences Grade (Marks)
0 89.2
1 86.4
2 83.5
3 81.1
4 78.2
5 73.9
6 64.3
7 71.7
8 65.5
9 66.2
5 72.4
6 67.5
1 85
1 86.9
1 83.7
2 82.7
3 81
3 80.9
2 83
2 82.2
3 81
4 77.6
5 72.9
6 61.2
7 66.9
5 70.8
9 65.2
8 55.9
5 71.8
2 85.5

An Economics professor is trying to investigate the relationship between the number of times students were absent during the semester and their numerical grades. The data represents the grades of 30 randomly selected students from his economics class along with the number of times they were absent.

Using Excel make a scatterplot.

Does it appear to be a positive or negative relationship?

Explain your answer.

What are the independent and dependent variables?

                      Independent Variable:

                      Dependent Variable:

Solutions

Expert Solution

Answer:-

From the above information

We draw scatter plot by using EXCEL

Conclusion :- from the above scatter plot we observe that there is a negative relationship between absences and grade.

Here , dependent variable = Grade.

Independent variable = Absences .

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