Question

HELP ASAP!!! 39 MINUTES LEFTTTTTTT PLEASE SOMEONEEE

The table shows the number of hours spent studying for a history final exam and the score on that exam. Each row represents a single student. Which value is an outlier in the table below?

Exam Scores
Number of hours spent studying, x
Exam score
(out of 100), y
1.5
65
2
68
3.5
71
4.5
98
4.5
82
6
84
6.5
88
7
85
7
80

A. (1.5, 65)
B. (3.5, 71)
C. (4.5, 98)
D. (6.5, 88)

Answer 1

For it to be an outlier in this problem, it would mean that the score for every hour studied would be wildly inconsistent from the rest of the dataset. We see that every one of them is around 15-20, but then we have (1.5,65) which yields 43 points per hour, which is very inconsistent with the rest of the data which leads us to say that A is our outlier.

Answer 2

C) (4.5, 98)

Explanation:

Outliers are easy to find, they just have to be farther away from the cluster(s) of data in general.

So, I made a scatterplot based on the exam scores and this is what I got:

The outlier is (4.5,98)