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
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
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
- 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. ( )
- The total area of the six bars in a relative frequency histogram for which the width of each bar is five units is 1.
- Which of the following statement describes correctly the purpose of analysis of the variance? A: To analyze whether there is a significant difference in the total variance of each group B: To analyze whether there is a significant difference in the overall standard deviation of each group C: To analyze whether there is a significant difference in the overall mean value of each group D: To analyze whether there is a significant difference in the overall median of each group