题目内容
（请给出正确答案）
[主观题]
A pie chart shows:
A、the frequency for each class.
B、the relative frequency for each class.
C、trends in the data.
D、the class midpoints.
提问人：网友fjnpcch
发布时间：2022-01-07
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题目内容
（请给出正确答案）
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更多“A pie chart shows:”相关的问题
第4题
如果结点A向结点B发送了RTS，结点B向结点A发送了CTS，关于接收到CTS的结点，一下哪一项描述是正确的( )。
A、因为该结点靠近结点A，因此在CTS持续时间字段值规定的时间段内，不发送MAC帧
B、因为该结点靠近结点B，因此在CTS持续时间字段值规定的时间段内，不发送MAC帧
C、因为该结点不靠近结点B，因此在CTS持续时间字段值规定的时间段内，继续争用无线信道不发送MAC帧
D、因为该结点不靠近结点A，因此在CTS持续时间字段值规定的时间段内，继续争用无线信道不发送MAC帧
第6题
The difference between a histogram and a frequency polygon is:
A、the frequency polygon is reported as a percent, a histogram does not report percents.
B、the histogram shows frequencies while a frequency polygon shows cumulative frequencies.
C、the bars in a histogram and a frequency polygon cannot be adjacent.
D、open-ended classes can be accommodated with a frequency polygon.
第7题
Which of the following measures of central location is affected most by extreme values?
A、Median
B、Mean
C、Mode
D、Variance
第8题
A key difference between calculating the sample mean and the population mean is:
A、we use and n instead of μ and N.
B、we divide the sum of the observations by n - 1 instead of n.
C、the sample observations are ranked and the middle value is selected as the population mean.
D、there are no differences.
