In a data set with a normal distribution, approximately what percentage of the data falls within one standard deviation of the mean? A. 34%. B. 68%. C. 95%. D. 99.7%. 相关知识点: 试题来源: 解析 B。在正态分布的数据集中,大约 68%的数据落在均值的一个标准差范围内。本题考查了正态...
68% of the scores lie within one standard deviation of the mean. If the SAT scores of all the high school juniors in Center City followed a normal distribution with a mean of 500 and a standard deviation of 100, and if 10,200 students scored between 400 and 500, approximately how many...
If the SAT scores of all the high school juniors in Center City followed a normal distribution with a mean of 500 and a standard deviation of 100, and if 10,200 students scored between 400 and 500, approximately how many students scored above 600 A. 2,400 B. 4,800 C. 5.100D. 7,...
and ensures an approximately normal distribution of gene expression data19. We performed group comparison of DEGs in vapers and smokers relative to controls using linear contrasts defined a priori19,20,21,22as follows: tested features were considered differentially expressed if they possessed an absolu...
n. statements about a normal distribution is least accurate. A. The mean, median, and mode are equal. B. A normal distribution has excess kurtosis of three. C. The mean and variance completely define a normal distribution. D. Approximately 68% of the observations lie within +/- 1 ...
The normal distribution is a continuous probability distribution that is symmetrical around its mean with most values near the central peak.
(1,800 samples) before each test35, using a Fischerz-transformation (that is,z = artanh(r)) to bring the Pearson correlation coefficients into a normal distribution. (Note: the results of FDR correction were largely insensitive to the choice of threshold. With the threshold reduced toq...
Phase stability distributions were approximated using a bootstrapping technique, in which the energy of each phase was randomly sampled from a normal distribution with standard deviation equal to the composition’s DFT uncertainty before performing convex hull analysis in energy-composition space to yield...
Approximately 68% of the data collected in a normal distribution will fall within +/- one standard deviation of the mean. Approximately 95% will fall within +/- two standard deviations and 99.7% will fall within +/- three standard deviations. Unlike the binomial distribution, the normal distrib...
If the mean is very large, then the Poisson distribution is approximately a normal distribution. The Poisson Distribution in Finance The Poisson distribution is also commonly used to model financial count data where the tally is small and is often zero. As one example in finance, it can be us...