THE MEAN ABSOLUTE DEVIATION: is the average distance between each data value and the mean or the average of absolute differences expressed without plus or minus sign between each value in a set of given values and the average of all values of that set.
VARIANCE: is defined as the arithmetic mean of the square of the deviation from the mean or is the mean squared deviation
STANDARD DEVIATION: Is the measure of how far typical values tend to be from the mean or is the square root of variance
GROUPED DATA: is a statistical term used in data analysis. A raw data set can be organized by constructing a table showing the frequency distribution of the variables whose values are given in the raw data set. Such a frequency table is often referred to as grouped data.
EXAMPLE
Calculate the variance and standard deviation of the following set of numbers:
4, 8, 12,16, 20, 24, 28, 32.
Read our disclaimer.
AD: Take Free online baptism course: Preachi.com