问题如下:
Given a certain binomial random variable x, the number of total trials is 10. If the probability of x successes in 10 trials is all 0.5, the binomial distribution is most likely to be:
选项:
A.asymmetric
B.skewed.
C.symmetric.
解释:
C is correct. The only way for a binomial distribution to be symmetric is that the probability of x successes in all trials equals 0.50.
老师,好:
因为binomial distribution是属于discrete的,所以它的分布图是怎么样的,能画出来不?
因为讲义里没提到,所以看了前面的提问,我想问下,是p小于0.5是右偏,大于0.5是左偏么?