(a) The first three moments of a distribution about the value 6 calculated from a set of 8...

(a) The first three moments of a distribution about the
value 6 calculated from a set of 8 observations are 0.6, 18.2, -32.0. Find the
measures of central tendency and tiispersion and also the third moment about
the origin.

(b) If the -second and third central moments of a
distribution are 25 and -15.75, find the moment-measure of skewness.

(c) The first three moments about the value 2 are 4, 65 and
325. Find its mean, S.D. and the moment-measure of skewness.