What are the count and standard deviation columns?
The count represents the number of responses received. In layperson’s terms, the standard deviation is an average of the dispersion of the responses – how they are spread out. The standard deviation of a population is found by calculating the mean, finding the difference between each value and the mean, squaring each of the differences (deviations) obtained, adding them together, dividing by the number of values averaged and finding the square root of the final answer to get back to the original scale of measurement.
Related Questions
- The SQL standard requires that a UNIQUE constraint be enforced even if one or more of the columns in the constraint are NULL, but SQLite does not do this. Isn that a bug?
- What parameters are used to calculate the standard deviation in order to equalize the contracts for volatility?
- Is it true that when a distribution is negatively skewed the standard deviation over estimates risk
