Importance of measures of central tendency?

Answer 1

Measures of the general value are a common need. Average, Median, and Mode are the three commonest.

Average is the arithmetic average of all the values.

Median is the actual measurement which is midwaybetween the extreme values, and is often closest to the average.

Mode is the commonest value.

Other indicators of central tendency, may ignore all value beyond say, three standard deviations, and thus ignore the contribution by the extreme, and uncommon, values.