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当总体为非正态时,计算双侧95%医学参考值范围的公式为()https://assets.asklib.com/psource/2015111710031118195.jpg
A . A
B . B
C . C
D . D
E . E
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若正常成人的血铅含量X近似服从对数正态分布,拟用300名正常人血铅值确定99%参考值范围,最好采用公式以下哪种计算(其中Y=logX)()
A . ['https://assets.asklib.com/psource/2015092912005719496.gif
±2.58SB . +2.33SC .https://assets.asklib.com/psource/2015092912005719496.gif
log-1(https://assets.asklib.com/psource/2015092912012384344.gif
±2.58Sy)D . log-1(https://assets.asklib.com/psource/2015092912012384344.gif
+2.33Sy)E . log-1(https://assets.asklib.com/psource/2015092912012384344.gif
+1.96Sy)
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已知某地正常成年男子的红细胞数近似正态分布,拟用144名正常成年男子的红细胞数确定95%参考值范围,宜采用公式()。
A . 均数
B . (均数±1.95)×标准差
C . (均数±1.95)×标准误
D . (均数±2.58)×标准差
E . (均数±2.58)×标准误
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采用正态近似法估计总体率的95%置信区间,其公式为()
A . p-1.96S/https://assets.asklib.com/psource/2015111910284088761.jpg
,p+1.96S/https://assets.asklib.com/psource/201511191028446378.jpg
)B . p-2.58S/https://assets.asklib.com/psource/201511191028446378.jpg
,p+2.58S/https://assets.asklib.com/psource/201511191028446378.jpg
)C . p-1.96Sp,p+1.96Sp)D . p-2.58Sp,p+2.58Sp)E . p-1.96Sp,p+1.96Sp)
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95%的医学参考值范围的计算公式为()
A . ['https://assets.asklib.com/psource/2015092508583342932.jpg
B .https://assets.asklib.com/psource/2015092508583669707.jpg
C .https://assets.asklib.com/psource/2015092508584047679.jpg
D .https://assets.asklib.com/psource/2015092508584912140.jpg
E .https://assets.asklib.com/psource/2015092508584316184.jpg
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表示一组服从正态分布计量数据双侧95%参考值范围,应选用()
A . X的平均数和SzB . X的平均数和SC . U和SD . M±(P75-P25)E .https://assets.asklib.com/psource/2015101516150421798.jpg
±1.96S
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正态分布资料σ未知,95%可信区间的计算公式为()
A . ['https://assets.asklib.com/psource/2015092011415747369.jpg
B .https://assets.asklib.com/psource/2015092011425280462.jpg
C .https://assets.asklib.com/psource/201509201142589456.jpg
D .https://assets.asklib.com/psource/2015092011430798778.jpg
E .https://assets.asklib.com/psource/2015092011431737678.jpg
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若正常成人血铅含量近似对数正态分布,用300名正常成人血铅值确定99%参考值范围,最好采用公式计算()
A . ['['https://assets.asklib.com/psource/2015111617225944246.jpg
±2.58SB . 1g-1(1gX+2.58Shttps://assets.asklib.com/psource/2015111617231747505.jpg
)C .https://assets.asklib.com/psource/2015111617225944246.jpg
+2.585https://assets.asklib.com/psource/2015111617225032096.jpg
D . 1g-1(1gX+2.33Shttps://assets.asklib.com/psource/2015111617233127866.jpg
)E .https://assets.asklib.com/psource/2015111617225944246.jpg
+2.33S
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当样本含量足够大时,样本率又不接近0或1时,以样本率推断总体率95%可信区间的计算公式为()
A . p±2.58s
B . p+1.645s
C . p±1.96s
D . π±1.96σ
E . X±1.96s
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采用正态近似法估计总体率的95%置信区间,其公式为()https://assets.asklib.com/psource/2015111710165989782.jpg
A . A
B . B
C . C
D . D
E . E
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该组资料的95%医学参考值范围为()。
A . ['X±1.96SB .https://assets.asklib.com/psource/2015092814150583381.jpg
C . X±1.96S/nD . P2.5~P97.5E .https://assets.asklib.com/psource/2015092814151263865.jpg
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估计正常成人尿汞值的95%医学参考值范围宜采用()
A . PB .https://assets.asklib.com/psource/2015102117424135835.jpg
C .https://assets.asklib.com/psource/2015102117424517343.jpg
D .https://assets.asklib.com/psource/2015102117424858943.jpg
E .https://assets.asklib.com/psource/2015102117425353852.jpg
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估计正常成人红细胞数的95%医学参考值范围宜采用()
A . PB .https://assets.asklib.com/psource/2015102117420850227.jpg
C .https://assets.asklib.com/psource/2015102117421311338.jpg
D .https://assets.asklib.com/psource/2015102117421760202.jpg
E .https://assets.asklib.com/psource/20151021174220768.jpg
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当总体为非正态时,计算双侧95%医学参考值范围的公式为()
A .https://assets.asklib.com/psource/2016100916493818097.gif
±1.96SB .https://assets.asklib.com/psource/2016100916500752242.gif
C .https://assets.asklib.com/psource/2016100916501615563.gif
D . p±1.96SpE .https://assets.asklib.com/psource/2016100916502643423.gif
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95%的医学参考值范围的计算公式为()https://assets.asklib.com/psource/2015102815532373370.jpg
A . A
B . B
C . C
D . D
E . E
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假定正常成人血铅含量服从对数正态分布,估计其95%医学参考值范围宜采用()
A . PB .https://assets.asklib.com/psource/2015102117411653053.jpg
C .https://assets.asklib.com/psource/201510211741203866.jpg
D .https://assets.asklib.com/psource/2015102117412558837.jpg
E .https://assets.asklib.com/psource/2015102117413065510.jpg
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已知血糖为正态分布,如确定其95%参考值范围用
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若某项指标呈正态分布,且过高过低都属异常,则95%参考值范围为
A.-∞~μ+1.96σ
B.μ-1.96σ~+∞
C.μ-1.96σ~μ+1.96σ
D.μ-2.58σ~μ+2.58σ
E.-∞~μ+2.58σ
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某项指标95%医学参考值范围表示的是()
A、检测指标在此范围,判断“异常”正确的概率大于或等于95%
B、检测指标在此范围,判断“正常”正确的概率大于或等于95%
C、在“异常”总体中有95%的人在此范围之外
D、在“正常”总体中有95%的人在此范围
E、检测指标若超出此范围,则有95%的把握说明诊断对象为“异常”
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某计量指标X呈对数正态分布,计算其95%医学参考值范围的公式是
<img src='https://img2.soutiyun.com/ask/uploadfile/4077001-4080000/d35974b425a29c3f646eb464873f4833.gif' />
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某项指标95%医学参考值范围表示的是
A.检测指标在此范围,判断“异常”正确的概率大于或等于95%
B.检测指标在此范围,判断“正常”正确的概率大于或等于95%
C.在“异常”总体中有95%的人在此范围之外
D.在“正常”总体中有95%的人在此范围
E.检测指标若在此范围内,则说明诊断对象是正常的
F.检测指标若不在此范围内,则说明诊断对象是异常的