In a normal distribution, approximately _% of the data falls within one standard deviation of the mean. A. 68 B. 95 C. 99.7 D. 50 相关知识点: 试题来源: 解析 A。解析:在正态分布中,大约 68%的数据落在均值加减一个标准差的范围内,95%的数据落在均值加减两个标准差的范围内,99.7%的数据落...
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,...
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...
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 SAT scores of all the high school juniors inCenterCity 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 600A、2,400 B、4,800C、5.100 D、7,200E、9,...
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,...
aa combination of a lognormal distribution until approximately $43 per hour and a Pareto distribution for higher wages,The two parametric fits differ mainly in their extreme right tails and are virtually indistinguishable over the range of wages available in the data. 记录正常的发行直到大约$43每个...
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...
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 ...
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...