The grade point averages (GPA) of 18 randomly selected college students are used to estimate the mean GPA of the college students. The GPAs from the sample are as follows:
2.3 3.3 2.6 1.8 0.2 3.1 4.0 0.7 3.1
2.3 2.0 3.1 3.4 1.3 2.6 2.6 3.7 2.2
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Answer:
x | x2 |
2.3 | 5.29 |
3.3 | 10.89 |
2.6 | 6.76 |
1.8 | 3.24 |
0.2 | 0.04 |
3.1 | 9.61 |
4 | 16 |
0.7 | 0.49 |
3.1 | 9.61 |
2.3 | 5.29 |
2 | 4 |
3.1 | 9.61 |
3.4 | 11.56 |
1.3 | 1.69 |
2.6 | 6.76 |
2.6 | 6.76 |
3.7 | 13.69 |
2.2 | 4.84 |
∑x=44.3 | ∑x2=126.13 |
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