AVERAGEA Returns the average of its arguments, including numbers, text, and logical values
BETADIST Returns the cumulative beta probability density function
BETAINV Returns the inverse of the cumulative beta probability density function
BINOMDIST Returns the individual term binomial distribution probability
CHIDIST Returns the one-tailed probability of the chi-squared distribution
CHIINV Returns the inverse of the one-tailed probability of the chi-squared distribution
CHITEST Returns the test for independence
CONFIDENCE Returns the confidence interval for a population mean
=CONFIDENCE(alpha,standard_dev,size)