商务数据的相对频数(
relative frequency)之和为(
)。
A: 1
B: 2
C: 0
D: 不确定
relative frequency)之和为(
)。
A: 1
B: 2
C: 0
D: 不确定
举一反三
- The<br/>vertical axis of the histogram is () A: Frequency B: Relative<br/>frequency C: Relative<br/>frequency density D: The<br/>values of a variable E: The<br/>intervals of a variable
- For<br/>a bar chart, we take _____ as the horizontal axis. () A: frequency B: relative<br/>frequency C: relative<br/>frequency density D: values<br/>of a variable
- Which<br/>of the following is the Y-axis of the histogram?() A: frequency B: relative<br/>frequency C: relative<br/>frequency density D: values<br/>of a variable E: rate
- Which<br/>of the following can be used as the Y-axis of the bar chart? () A: frequency B: relative<br/>frequency C: relative<br/>frequency density D: values<br/>of a variable
- 在MATLAB命令行窗口输入下列命令:[br][/br] >> p=[1,-2,0];[br][/br] >> x=roots(p)[br][/br] 则x的值为( )。 A: 2 0 B: 1 -2 C: 1 0 D: -2 0