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2 cards from this section. Quick, good the night before a test.
Find the mean for the data set: 2, 4, 6, 8, 10.
Add the numbers and divide by the total count.
What is the deviation of 5 from the mean of 10?
Subtract the mean from the data point.
What is the formula for deviation from the mean?
Remember the relationship between data points and the mean.
True or False: A higher standard deviation indicates data points that are closer to the mean.
Consider what large deviations imply.
Given the heights of 5 students: 150cm, 160cm, 165cm, 170cm, 180cm, calculate the variance and standard deviation.
Square the deviations and average them!
For the dataset from the last semester's scores: 58, 64, 70, 75, 80, how do you interpret a standard deviation of 8?
How does this affect understanding overall performance?
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