Search the world's most comprehensive index of full-text books. My library. Urbanized areas h or more people and urban clusters have at least 2, people but less t people, and both areas have a core area with a density of at least 1, people per square mile. All other areas are defined as rural. Rural populations tend to be older. The median age is 44 in rural areas and 37 in urban areas. Small Area Population Statistics (SAPS) Small Area Population Statistics are Census statistics produced for a range of geographical levels from state to small areas. A brief description for each of the levels for which information is published can be found here Census Boundary files description. Elementary statistics books Our free elementary statistics books will help you acquire a better understanding of the core concepts of statistics. The textbooks in this section cover subjects such as sampling, statistics for business and statistical analysis of social science.

Summary • An infinite number of maps can be created for any variable measured across small areas. • Maps allow the user to better understand patterns in their data, but the ultimate goal should be to understand the processes that create the patterns observed. • Small area . In their marvelous book Made to Stick, the brothers Heath (Chip and Dan) describe what’s needed to get our messages to stick—that is, to communicate the intended points, be understood, be remembered, and lead to the hoped for response. Several of the points that I’m making in this article are eloquently argued in Made to Stick. In descriptive statistics, summary statistics are used to summarize a set of observations, in order to communicate the largest amount of information as simply as ticians commonly try to describe the observations in a measure of location, or central tendency, such as the arithmetic mean; a measure of statistical dispersion like the standard mean absolute deviation. Part 2 / Basic Tools of Research: Sampling, Measurement, Distributions, and Descriptive Statistics Sampling Distribution If we draw a number of samples from the same population, then compute sample statistics for statistics computed from a number of sample distributions.

Islam is divided into two major denominations, Sunni and Shi' the total Muslim population, 87–90% are Sunni and 10–13% are Shi'a. Most Shi'as (between 68% and 80%) live in mainly four countries: Iran, Azerbaijan, Bahrain, and Iraq. The major surviving Imamah-Muslim Sects are Usulism (with nearly more than 10%), Nizari Ismailism (with nearly more than 1%) and Alevism (with slightly more.