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4 cards from this section. Quick, good the night before a test.
What is the non-negativity property of variance?
What happens when you square a number?
Explain the impact of an outlier on standard deviation.
What does an extreme value in the dataset do?
What is the minimum value of variance?
Think about squaring numbers.
True or False: Standard deviation can be negative.
What does that square root do?
Given the data set {5, 6, 8, 10, 15}, calculate the variance. Discuss the role a high value (15) plays in your computation.
Make sure to calculate the squared differences.
You have two morphological measurements of a model, both with variances of 25. If you scale one by a factor of -4, what is the new variance, and what does it signify?
Remember how to apply the scaling rule to variance.
5 more questions in this section. Enroll free to practise them all.
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