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Similarly, how do you find the missing number when given the median?
If there is an even number of numbersinthe set, the median is the average of the twomiddlenumbers, and the only way to find the missingnumberis if the median is one of those twonumbers. If itis, you can take the median and the oneof the twonumbers you know. Use the formula (#+#)/2=median andsolve.
Moreover, how do you find the mean when given the frequency?
The Mean from a Frequency Table. It iseasyto calculate the Mean: Add up all the numbers,thendivide by how many numbers there are.
The mean (average) is found by adding all of thenumberstogether and dividing by the number of items in the set: 10+ 10 +20 + 40 + 70 / 5 = 30. The median is found by orderingtheset from lowest to highest and finding the exact middle.Themedian is just the middle number: 20.