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For the mean i got 2.5, for the variance i got .57. Is this right? Q4. My QBA class has 10 students. Find mean and

For the mean i got 2.5, for the variance i got .57. Is this right?

Q4. My QBA class has 10 students. Find mean and variance (this question is for sample) GPA # of students 1.0-2.0, 2 2.0-3.0, 4 3.0-4.0, 2

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