The influence of weights on the weighted arithmetic mean is determined by ()
A: Value size of each group of character values
B: What is the absolute number of weights
C: Proportion of the number of units in each group to the population number of units
D: What is the population number of units
A: Value size of each group of character values
B: What is the absolute number of weights
C: Proportion of the number of units in each group to the population number of units
D: What is the population number of units
举一反三
- The influence of weight on weighted arithmetic mean depends on ( ) A: Value size of each group of character values B: What is the absolute number of weights C: Proportion of units in each group to total units D: What is the population number of units
- We may interpret the absolute value as being the number of units a given number is from the origin(原点), regardless of direction.
- The greater the absolute number of weights, the greater the effect on the arithmetic mean. ( )
- Age distribution is the number of individuals of each age in the population which influences greatly the rate of population growth。 （ ）
- What is meant by the "unused portion of K"? A: the density-dependent growth rate of a population B: the total number of resources available to a population C: the number of organisms still left to populate an environment D: the maximum number of organisms tha an environment can support