A. variance B. spread C. mean D. median 相关知识点: 试题来源: 解析 B。本题主要考查对标准差概念的理解。标准差是衡量数据分散程度的指标,也就是spread。选项 A 方差与标准差不同;选项 C 均值不是标准差的含义;选项 D 中位数也与标准差无关。反馈 收藏 ...
A. central tendency B. variability C. symmetry D. skewness 相关知识点: 试题来源: 解析 B。A 选项 central tendency 中心趋势。B 选项 variability 变异性,标准差是衡量数据离散程度,即变异性的指标,符合题意。C 选项 symmetry 对称性。D 选项 skewness 偏度。反馈...
A. consistent B. homogeneous C. diverse D. similar 相关知识点: 试题来源: 解析 C。如果标准差大,意味着数据是多样的,diverse。选项 A 一致的不符合大标准差的情况;选项 B 同质的也不对;选项 D 相似的也不是大标准差的表现。反馈 收藏
Standard Deviation is a statistical tool that is used widely by statisticians, economists, financial investors, mathematicians, and government officials. It allows these experts to see how variable a collection of data is. Furthermore, SD is calculated as the square root of the variance of the ...
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anigeria 尼日利亚[translate] aLAMINATED 碾压[translate] ado notuse under browning element 做notuse 在变褐元素之下[translate] aThe standard deviation its defined as the aquare root of the mean of the squared deviations from the mean. All this means is that we square the deviations above, take...
A population has a standard deviation of 16. If a sample of size 64 is selected from this population, what is the probability that the sample mean will be within ±2 of the population mean? A.0.6826.B.0.3413.C.-0.6826.D.Since the mean is not given, there is no answer to this quest...
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