1. True or False For s = standard deviation: A. s can never be negative. B. s can never be zero. C. For bell-shaped distributions, about 95% of the data fall within x-bar i25. F r m n nd m i n: D. The mean, median and mode can never all be the same. E. The mean is always one of the data points. F. When n is odd, the median is one of the data points. G. The median is the same as the second quartile and the 75th percentile