ED50 means A: Median effective concentration B: Median toxic dose C: Median lethal dose D: Median effective dose
ED50 means A: Median effective concentration B: Median toxic dose C: Median lethal dose D: Median effective dose
x->c(1,2,3,4,5)，则median(x)=3。
x->c(1,2,3,4,5)，则median(x)=3。
Theoretically, the mean, median, and mode are all equal for a normal distribution.
Theoretically, the mean, median, and mode are all equal for a normal distribution.
If the mean of a numerical data set exceeds the median, the data are considered to be left-skewed.
If the mean of a numerical data set exceeds the median, the data are considered to be left-skewed.
已知x=[1,3,-1,1,5,6]，则median(x)=（ ）
已知x=[1,3,-1,1,5,6]，则median(x)=（ ）
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
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
True or False: Theoretically, the mean, median, and mode are all equal for a normal distribution.
True or False: 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
Another term for average is ____________. A: variance B: mode C: median D: mean
x->c(1,2,3,4,5)，则median(x)=3。 A: 正确 B: 错误
x->c(1,2,3,4,5)，则median(x)=3。 A: 正确 B: 错误
已知x=[1,3,-1,1,5,6],则median(x)=( ),sum(x)=( )
已知x=[1,3,-1,1,5,6],则median(x)=( ),sum(x)=( )