______________________________________________________________________________ 3. Use a colon between independent clauses if the second clause summarizes or explains the first. A colon is used to introduce an idea that is an explanation or continuation of the one that comes before the colon. The colon can be considered as a gateway inviting the reader to go on. Look at these examples: Ben suddenly canceled his evening plans for a simple reason: his car was out of gas.
Measures of Center: Mean, Median, and Mode Measures of center generally tell us about the middle, or center, of a distribution. They are the mean, the median, and the mode. Each plays a useful role in Statistics. The Mean The mean, or arithmetic average, is calculated by adding all the data values and dividing by the number of values.
More About Measures of Central Tendency. Mean: Mean is the most common measure of central tendency. It is simply the sum of the numbers divided by the number of numbers in a set of data. This is also known as average. Median: Median is the number present in the middle when the numbers in a set of data are arranged in ascending or descending order.