41. The two important values necessary for describing the variation in a series of
observations are:
(a) Mean and standard deviation
(b) Mean and range
(c) Median and range
(d) Median and standard deviation
41. The two important values necessary for describing the variation in a series of
observations are:
(a) Mean and standard deviation
(b) Mean and range
(c) Median and range
(d) Median and standard deviation