$5 million 1991 Disc jockey England Fast & Furious Joe McElderry Joe McElderry discography Joseph Joe McElderry Joseph McElderry Joseph Mcelderry Net Worth.
The arithmetic mean is the most common measure of central tendency. It is simply the sum of the numbers divided by the number of numbers. The symbol Î¼ is used for the mean of a population. The symbol M is used for the mean of a sample. The formula for Î¼ is shown below: Î¼ = Î£X/N
The arithmetical average of all the scores and is used with interval or ratio data. It is the most widely used measure of central tendency. Most statistical tests of significance use the mean. The score where 50% of the scores are above it and 50% of the scores are below it. Not as sensitive to extremes in the high and low scores. Best used when the data are skewed and the researcher is interested in the typical score.