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In a competition, a certain contestant scored either 2 points or 4 points in each round of the competition. This contestant`s average (arithmetic mean) score for the entire competition was 3.8 points per round.

Quantity A

9 times the number of rounds in which the contestant scored for 2 points

Quantity B

The number of rounds in which the contestant scored for 4 points


Quantity A

The median of 2, 5, 7, 10, x, x+4

Quantity B

The median of 1, 2, 3, 5, 6, 7, 8, 9


2$$\sqrt{2}$$-1, $$\sqrt{2}$$-1, 1+$$\sqrt{2}$$, 1- $$\sqrt{2}$$, $$\sqrt{2}$$

What is the median of the numbers shown?
If the average (arithmetic mean) of the list of positive integers 2, x, y and 7 is 3, then the median of the list of integers is?
List S consists of 19 numbers, and the median of the numbers in S is 8. List T consists of the numbers in S and the number 7, Which of the following numbers could be the median of T?

Indicate all such numbers.
y < x

y=rs

z=rxy

If r, s, x, y and z are positive even integers that are related by the system shown, what is the median of the integers r, s, x, y and z?
Quantity A:The median number of days per month for a year in which February has 28 days

Quantity B:The median number of days per month for a year in which February has 29 days
Twenty-five out of 48 employees salaries of Business Y are less than $38,500 per year.

Quantity A

The median salary for the 48 employees at Business Y

Quantity B

$38,000


Mr. Thomas gave a chemistry test to 25 students and assigned each student a score. Of the 25 students, 12 students received scores that were greater than 80.

Which of the following statements individually provide(s) sufficient additional information to determine the median of the 25 scores?

Indicate all such statements.


If the ages of a group of people is sorted as above, then the median of all these ages lie in which of the following range?
List S consists of 19 numbers, and the median of the numbers in S is 8. List T consists of the numbers in S and the number 7, Which of the following numbers could be the median of T?

Indicate all such numbers.
Each of 7 fish in an aquarium has a different weight, and the total weight of the 7 fish is 172 pounds. The total weight of the 4 heaviest fish is 114 pounds.The average (arithmetic mean) weight of the 4 lightest fish is 20.5 pounds. What is the median weight,in pounds, of the 7 fish?

_____pounds
The median of the scores of five people is 20, and the median of the scores of the other seven people is 25. Put these twelve people together, what the median might be?

Indicate all such values.

Quantity A

The average (arithmetic mean) of the integers from 1 to 31, inclusive

Quantity B

16


The average (arithmetic mean) of the first n positive integers is 17.

Quantity A

n

Quantity B

33


Quantity A

The median of consecutive integers from 6 to 86, inclusive

Quantity B

37.5


S is a set of n different numbers 5n+4, where 1 ≤ n ≤ 21 (n is an integer). What is the median of all the numbers in S?
r < s < t

The average (arithmetic mean) of r, s, and t is equal to the median of r, s, and t .

Quantity A

s-r

Quantity B

t-s


In a list of some consecutive positive integers, the range is 24, while the median is 26. What is the greatest integer in the list?
k≠0

k+1, k-1, k, k+2, k+3, what is the ratio of average to median?

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