Math
posted by Shine
The arithmetic mean of a set of 50 numbers is 38.If the two numbers,45 and 55,are discarded,the mean of the remaining set of numbers is__.

Steve
The mean is the total divided by how many there are. So, the new mean is
(50*384555)/48 = 37.5
Respond to this Question
Similar Questions

Sequence and series
Do you know the difference between a sequence and a series? 
math
What is findind a five number summary of each ser of numbers 7,7,5,4,1,9,8,8,8,5,2 and range of the same numbers please I only see one set of numbers. Why do you refer to "each" set? 
AP Statistics (math)
Find a set of numbers that will satisfy the following conditions:  the median of a set of 20 numbers is 24.  the range is 42.  to the nearest whole number the mean is 24.  no more than three numbers are the same. 
7th grade Algebra
A set of whole numbers contains 1, 3, 4, 5, 6, 11, and X. The mean and median of the set are the same, and the mean is equal to one of the six known numbers above. What is the value of X? 
Math
The mean of a set of n numbers is 180, if 54 is added to the set of numbers the new mean is 159. Find n 
arithmetic
A set of 7 numbers has a mean of 9. What additional number must be included in this set to create a new set with a mean that is 3 less than the mean of the original set? 
math
There are 5 numbers in a set of data. There are no repeated numbers. Which measure of data must represent a number in the set that is greater than 2 of the numbers in the set and less than 2 of the numbers? 
math
there are 5 whole numbers in a data set. the least number is 14 and the greatest number is 25. the mean and median are both 19.what numbers could be the values in the data set? 
math
The mean of a set of twelve numbers is 5.5. The mean of another set of eight numbers is k. The mean of the combined set of 20 numbers is 8.5. Find the value of k 
maths
if the arithmetic mean of four numbers is 20 and the arithmetic mean of other six numbers is 10 then,find the arithmetic mean of all the numbers taken as one group