Statistics For Dummies, 2nd Edition. If a statistical data set has a normal distribution, it is customary to standardize all the data to obtain standard scores known as z-values or z-scores. The distribution of z-values takes on a standard normal distribution (or Z-distribution). The standard normal distribution is a special normal distribution with a mean equal to 0 and a standard deviation equal to 1. A standard normal (Z-) distribution has a bell-shaped curve with mean 0 and standard deviation 1. The standard normal distribution is useful for examining the data and determining statistics like percentiles, or the percentage of the data falling between two values.
Antioch is one of the oldest towns in California. In 1848, John Marsh, owner of Rancho Los Meganos, one of the largest ranches in California, built a landing on the San Joaquin River in what is now Antioch. It became known as Marsh's Landing, and was the shipping point for the 17,000-acre rancho.
Safest Antioch neighborhoods. Antioch, CA crime analytics. With a crime rate of 44 per one thousand residents, Antioch has one of the highest crime rates in America compared to all communities of all sizes - from the smallest towns to the very largest cities. One's chance of becoming a victim of either violent or property crime here is one in 23.