GRE
The standard deviation of all the numbers in Set A
The standard deviation of all the numbers in Set B
x
y
The standard deviation of a, b, c, d and e
The standard deviation of a+1, b, c, d and e-1
The probability of the event that the value of Y is greater than 220
$$\frac{1}{6}$$
The percentage of number between 42.8 to 44.6
The percentage of number between 53.6 to 55.4
The standard deviation of x
The standard deviation of y
The probability that 45 < w < 60
The probability that w > 95
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269本备考书籍