60, 67, 63, 15, 61, 10, 15 Which of the following numbers is lower than the median but greater than...
60, 67, 63, 15, 61, 10, 15
Which of the following numbers is lower than the median but greater than the mean of the set of the numbers in the list?
Answer/Solution
53
Steps/Work
Yes, it can be solved with observation even without approximation in 30 sec.
Just observe given numbers: 10, 15 ,15, 60, 61, 63, 67
Median is very easy to tell - its 60. Now we want a number lower than 55 and greater than mean. How many numbers are lower than 60
DE are already out.
Now, we have 25, 36 and 53 and we want a number among these which is greater than mean. logically whatever be the mean, if one value out of these 5 has to be greater than mean it has to be 53. (Notice, if 25 is more than mean then 53 is also. If 36 is more than mean, 53 is also. )
Hence C it is!
Just observe given numbers: 10, 15 ,15, 60, 61, 63, 67
Median is very easy to tell - its 60. Now we want a number lower than 55 and greater than mean. How many numbers are lower than 60
DE are already out.
Now, we have 25, 36 and 53 and we want a number among these which is greater than mean. logically whatever be the mean, if one value out of these 5 has to be greater than mean it has to be 53. (Notice, if 25 is more than mean then 53 is also. If 36 is more than mean, 53 is also. )
Hence C it is!