______________________________________________________________________________ 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.
The range is mostly used as a measure of dispersion with the mode and median. Advantages: Disadvantages: This measure of dispersion is normally used with the median as the measure of central tendency.The range can also be used with the median. The Semi-interquartile Range is a measure of the spread of the middle 50% of the data, i.e. 25% of data below the median and 25% above the median.Having set the data out in order.It ignored the lowest quarter and highest quarter of the data set.he range is mostly used as a measure of dispersion with the mode and median. Advantages: Disadvantages: This measure of dispersion is normally used with the median as the measure of central tendency.