Simon Arnett, Director of Human Resources, is exploring the causes of employee absenteeism at Buderim Bottling during the last operating year (1 January 2005 to 31 December 2005). The average number of absences per employee, calculated from the personnel data of all employees, is a （）.

A student achieves an 82 on the first test in a statistics course. From this, she assumes that her average at the end of the semester (after other tests) will be about 82. This is an example of （）.

A summary measure that is computed from a sample to describe a characteristic of the population is called（）

某企業(yè)2018年技術工占50%，2019年新招收了一批學徒工，使學徒工的比重增加了10%。假定全廠各級工資水平均無變化，則2019年職工總平均工資將（）

Which of the following is best to show the percentage of a total budget that is spent on each category of items？（）

Which of the following statements is not true？（）

品合格率指標是（）

Which of the following is not the goal of descriptive statistics?（）

最能反映離散程度的指標是（）

If the individual class frequency is divided by the total frequency, the result is the （）.