The best measure of dispersion to determine the tallest t...
The best measure of dispersion to determine the tallest tree in a forest is
Range
Variance
Standard deviation
Mean deviation
Correct answer is B
Variance is the expectation of the squared deviation of a random variable from its mean. Informally, it measures how far a set of (random) numbers are spread out from their average value.
When two variables are positively related, the graph of the relationship ...
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