Im using "frequencies" on SPSS Student version. We are supposed to determine skewness and curtosis by dividing each by respective std error, then looking up that number in the z-score table.
i. e. the value for skewness is 6.887. The z-score table does not go that high, so this means the distribution is skewed to the right, positive skew.
If this were the value for kurtosis, would this mean leptokurtosis since it is a large, positive number?
But having a negative value for skew or kurtosis doesn't necessarily mean negative skew or platykurtosis, right?
What would numbers look like for negative skew? For platykurtosis? I'm assuming they would not be found in the z-score table either. THANKS!
i. e. the value for skewness is 6.887. The z-score table does not go that high, so this means the distribution is skewed to the right, positive skew.
If this were the value for kurtosis, would this mean leptokurtosis since it is a large, positive number?
But having a negative value for skew or kurtosis doesn't necessarily mean negative skew or platykurtosis, right?
What would numbers look like for negative skew? For platykurtosis? I'm assuming they would not be found in the z-score table either. THANKS!