Graphing calculators have a built in method for calculating standard deviation and sample deviation. This is true for other calculator manufacturers, which includes Casio and Hewlett Packard. However, the explanation below will use screenshots and explanations using the TI-Nspire calculator. Let us ge...
(四)标准差(standarddeviation)方差是用取平方后的单位来表示的,如果原始数据用毫米汞柱表示,则方差就是毫米汞柱的平方。在统计分析中为了方便,通常将方差取平方根,还原成与原始观察值单位相同的变异量度。x计算公式(1)总体标准差:(2)样本标准差:直接法:或NX 2)( 1)(2 nXXS1)(22 nnXXS加权法(频数表资料)...
标准离差指标(StandardDeviation)的目的是用来衡量价格的波动性(Volatility)的,该指标把标准差和平均值用来衡量、决定市场的 波动性,它属于滞后指标,该指标是用一条曲线来表示其波动性的。如果标准差大,就说明价格波动性大;如果标准差小,就说明价格波动 性小。如图所示: 标准离差指标(StandardDeviation)的目的是用来...
9 RegisterLog in Sign up with one click: Facebook Twitter Google Share on Facebook normal distribution (redirected fromStandard distribution) Thesaurus Medical Financial Encyclopedia normal distribution n. A theoretical frequency distribution for a random variable, characterized by a bell-shaped curve sym...
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