ED50 means
A: Median effective concentration
B: Median toxic dose
C: Median lethal dose
D: Median effective dose
A: Median effective concentration
B: Median toxic dose
C: Median lethal dose
D: Median effective dose
D
举一反三
- Efficacy means A: the concentration at which the drug elicits 50% of its maximal effect B: the maximal effect produced by the drug C: the dose at which 50% of subjects exhibit a therapeutic response to a drug D: the dose at which 50% of subjects dies E: the dose at which 50% of subjects exhibit a toxic reaction
- fully effective dose:
- x->c(1,2,3,4,5)，则median(x)=3。
- Theoretically, the mean, median, and mode are all equal for a normal distribution.
- Another term for average is ____________. A: variance B: mode C: median D: mean
内容
- 0
After preparing the probability distribution of cost outcome for a project, the estimate, with a 15% probability of being exceeded, is approximately one standard deviation （）. A: below the mean B: above the median C: above the mean D: above the median
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x->c(1,2,3,4,5)，则median(x)=3。 A: 正确 B: 错误
- 2
If the mean of a numerical data set exceeds the median, the data are considered to be left-skewed.
- 3
已知x=[1,3,-1,1,5,6]，则median(x)=（ ）
- 4
After preparing the probability distribution of cost outcome for a project, the estimate, with a 15% probability of being exceeded, is approximately one standard deviation ______ . A: A) below the mean B: B) above the median C: C) above the mean D: D) above the median