Practice problem
The formula for standard deviation is: σ=∑(x−xˉ)2n\sigma = \sqrt{\dfrac{\sum{(x-\bar{x})^{2}}}{n}}σ=n∑(x−xˉ)2
What does ∑\sum∑ represent?
A) The mean of the data set.
B) "The sum of"
C) An individual value of the data set.
D) The number of values in the set.
Type a concept, like “slope” or “photosynthesis”.
