The greater the absolute number of weights, the greater the effect on the arithmetic mean. ( )
举一反三
- 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
- 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
- The higher the standard of living and the greater the national wealth, the ______ . A: greater number of paper is used B: greater amount of paper is used C: greater the number of paper used D: greater the amount of paper used
- WhichofthefollowingstatementsconcerningadistributionwithpositiveskewnessandpositiveexcesskurtosisisFALSE（） A: The mean will be greater than the mode. B: It has a lower percentage of small deviations from the mean than a normal distribution. C: There are a large number of positive outliers.
- Which of the following statements about the arithmetic mean is not always correct? A: The mean is a measure of the middle (centre) of a distribution. B: Half of the observations are on either side of the mean. C: The sum of the deviations from the mean is zero. D: The value of the mean times the number of observations equals the sum of all of the observations.