B The lowest number is 1 and the highest. Variance and Standard Deviation. Can be measured by mean only.
Mean deviation calculates the dispersion of data items around a measure of central tendency generally taken as median or mode.
Range and Mean Deviation for Ungrouped Data. So we use MEDIANB2B12. A low SD indicates that the data points tend to be close to the mean whereas a high SD indicates that the data are spread out over a large range of values. Can be measured by mean only.