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题目内容
The average (arithmetic mean) weight of 8 children is 100 pounds.

No child weighs exactly 100 pounds.

Quantity A

Number of children who weigh more than 100 pounds.

Quantity B

Number of children who weigh less than 100 pounds.


The sum of 5 consecutive even integers is 0.

Quantity A

The product of the 5 integers

Quantity B

0


Triangle A has sides with length 5, 5 and 8.

Triangle B has sides with length 8, 8 and 5.

Quantity A

The average (arithmetic mean) measure of the 3 angles of triangle

Quantity B

The average (arithmetic mean) measure of the 3 angles of triangle B.


Set A:{0.2, 0.4, 0.6, 0.8}

Set B:{2, 4, 6, 8}

Quantity A

Standard deviation of set A

Quantity B

Standard deviation of set B


The average (arithmetic mean) of x , y and 15 is 9.

Quantity A

Average of x and y

Quantity B

16


The average (arithmetic mean) of 7 different numbers is 5

Quantity A

Median of the 7 numbers

Quantity B

5


In a population of chickens, the average (arithmetic mean) weight is 6.3 pounds, and the standard deviation is 1.2 pounds. Which of the following weights (in pounds) are within 1.5 units of standard deviation of the mean?

Indicate all weights.
$$If \frac{4}{w}+\frac{4}{x}=\frac{4}{y}$$and w*x = y, then the average (arithmetic mean) of w and x is
In a group of children, the average (arithmetic mean) weight of the boys is 60 pounds, and the average weight of the girls is 48 pounds. If the average weight of all of the children in the group is 50 pounds, what is the ratio of the number of boys to the number of girls?
If the average (arithmetic mean) of b and c is 5, and the average of c and d is 10, then b - d =
If the average (arithmetic mean) of x, y, and 20 is 11, then the average of 2*x + 3, 2*y - 4, and 8 is

Quantity A

The average (arithmetic mean) of$$3^{2},3^{4},3^{6}$$

Quantity B

$$3^{4}$$


In a group of 60 people, the average (arithmetic mean) age of the 40 females is 60, and the average age of the 20 males is 70.

Quantity A

Average age of all 60 people

Quantity B

65


w , x , and y are positive integers.

w + x + y = 90

Quantity A

Average (arithmetic mean) of w , x , and y

Quantity B

Median of w , x , and y


w + x + y = 21

Quantity A

Average of x and y

Quantity B

7


The average (arithmetic mean) of 3, 3, 5, 6 and x is 2.

Quantity A

x

Quantity B

-8


The average (arithmetic mean) weight of 8 children is 100 pounds.

No child weighs exactly 100 pounds.

Quantity A

Number of children who weigh more than 100 pounds.

Quantity B

Number of children who weigh less than 100 pounds.


The sum of 5 consecutive even integers is 0.

Quantity A

The product of the 5 integers

Quantity B

0


Triangle A has sides with length 5, 5 and 8.

Triangle B has sides with length 8, 8 and 5.

Quantity A

The average (arithmetic mean) measure of the 3 angles of triangle

Quantity B

The average (arithmetic mean) measure of the 3 angles of triangle B.


Set A:{0.2, 0.4, 0.6, 0.8}

Set B:{2, 4, 6, 8}

Quantity A

Standard deviation of set A

Quantity B

Standard deviation of set B


1 2 ... 37 38 39 40 41 42 43 ... 54 55

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