觉得题目怪怪的，实在没看懂，系统里没有答疑录音，请老师帮忙解答，谢谢。 答案选B A scientist recorded the number of eggs in each of 10 birds' nests.What was the standard deviation of the numbers of eggs in the 10 nests? 1) The average(arithmetic mean) number of eggs for the 10 nests was 4; 2) Each of the 10 nests contained the same number of eggs.

觉得题目怪怪的，实在没看懂，系统里没有答疑录音，请老师帮忙解答，谢谢。 答案选B A scientist recorded the number of eggs in each of 10 birds' nests.What was the standard deviation of the numbers of eggs in the 10 nests? 1) The average(arithmetic mean) number of eggs for the 10 nests was 4; 2) Each of the 10 nests contained the same number of eggs.