Averaging Negative Numbers! URGENT!?
596283
add them up like this \n4+2+(-3)+6+5+(-3)+(-2)+0+(-1)+(-4)+3\ndivide the result by 11 because that is how many numbers there are in your list.  That will be your answer!
457195
the simple program given above if fine.. in terms of the conncept.. but there's a bug... \nthe problem is with looping.. coz when u enter a number such as 80301  or 55302 ( a no. having 0 in between), the loop breaks at the point when zero is encountered.\n\n so the output in the first eg. is  8 0 ,sum= 8 (instead of correct 8 0 3 0 1 , sum=12\n\n\nso the logic of handling the number is absolutely correct but the looping is a comparatively difficult job in this case!
833237
so far, so good\n\nn!/(n-4)! = 56 [n!/(n-2)!] \n\nmultiply both sides by (n-2)!/n!\n\n[n!(n-2)!] / [n!(n-4)!] = 56\n\n(n-2)! / (n-4)! = 56\n\n(n-2)(n-3) = 56\n\nYou could multiply this out and solve the quadratic, in which case you will get one positive and one negative root, or if you remember that 56 = 8*7, then that quickly leads to n = 10
47438
Take each of your values, and then subtract the mean from them.  E.g., 70 - 56 = 14, 60 - 56 = 4, etc.\n\nNow take each of these answers and square it.  Half of the starting numbers will be negative (eg 30 - 56 = -26) but once you square all of these numbers, they should all be positive.\n\nNow you'll have 7 positive numbers. Add them all together and divide the answer by 7.  Finally, take the square root of that value, and that's the standard deviation.\n\nSo 14, 4, -6, 4, 4, 9, and -26\nbecome 196, 16, 36, 16, 16, 81, and 676\nSummed together gives 1037\ndivided by 7 is ~148.14\nSquare-rooted is ~12.2\n\nThe standard deviation is 12.2.\n\nNOTE: the rt11guru answer that follows is based on a technique used in some larger sample sets where 1 is subtracted from the number of entries, ie the sum is divided by 7-1=6 rather than 7.  That is called the *sample standard deviation*, as shown in the link.
959413
numbers ending in -0 or -5
398144
Just multiply the numbers.  positives will get a positive answer.  Odd number of negatives will get a negative answer.  Even number of negatives will get a positive answer.
873308
OK - I will try and explain it, but forgive me if I get myself confused...  hehehe\n\nFirst step - make a bell curve.  Put a mark in the center and label that "7 hours" - that's your mean.  Next, put three marks on either side of that middle point - those will be your standard deviation points.  For the points on the right, ADD 5.3 to the mean for the first one, then add 5.3 again for the 2nd, etc...  Points on the left side of the mean have the 5.3 SUBTRACTED.  (Am I still making sense?  lol)\n\nNow - the 68-95-99.7 rule says that 68% of the freshmen will fall into the area between the first line on EITHER side of the mean, 95% between the second lines and 99.7% between the third lines on either side of the mean.\n\nI think you should be able to figure it from there - I hope so...  Right now I am so confused I think I gave myself a headache!  lol\n\nGood luck!
846980
this is also true with any odd number (3...7,9,11,etc) not just 5.\n\nThe reason is because you are taking the average of the 5 numbers.  the average of a number is the exact middle of the set of numbers.  Look at the numbers in a line..\n 1+2+3+4+5\n\nnow if you look at the middle number in that line, it is 3.  if you add all the numbers together and divide by 5, you will get 3.  \n\nnow try it with 7 digits\n 1+2+3+4+5+6+7\n\nthe middle number is 4.  now add them up, and you get 28. divide by 7 and you get 4.  MAGIC!!\n\nnow try it with 4 digits.  NOTE: this is an even number, you will get a decimal.\n1+2+3+4\nthe middle number is...well..there really isn't one. its is between 2 and 3, isn't it? ok, now add it up, and you get 10. divide by 4 and you get 2.5.  isn't 2.5 right in the middle of 2 and 3??\n\nthere you go, i hope that works for ya\n\n(btw,this trick will only work if the numbers are consecutive)
973165
Your fourth one is wrong.  Subtracting a negative integer is the same as adding a positive integer. So it is 4 + 8 = 12.\n\nSame rule for the fifth one.  -8 + 4 = -4.\n\nThe rest of them are correct.\n\nI am REALLY glad to see someone doing the work in this category, and just asking for verification help, instead of someone asking us to do all the work for them.  Good for you!
911531
Arrange the numbers in increasing order.\nFind the middle number in the sequence of increasing numbers.\nThat's the median.\n\nIf there are an odd number of values (such as 31), then it's easy to find the middle number (it's the 16th one, since there are 15 lower numbers and 15 higher numbers).\n\nIf there are an even number of values (such as 30), then find the TWO middle numbers (the 15th and 16th numbers in this case, with 14 lower and 14 higher). The median is the AVERAGE of these two middle numbers (i.e., add them up and divide by 2).
843943
4, 0, -2, -2, 0\n\nFigure it out! Don't be lazy!
968535
first-negative 28x\n\nsecond- negative 29.4x
765887
Assuming your above program works, which I don't think it will because your doing an aggregate operation on an array..you should assign values to indexes in the array...eg cin >> Date[0] or use a for loop or something...regardless since your putting everything in an array anyway simply do something like using a counter variable, personally i think it would be the easiest way of doing something like that.\n\nint counter = 0;\n\ncout << enter day to subtract << endl;\ncin   >> counter;\ncout << Date[1]  - Date[counter] << endl;\n\nI belive using
472542
Take each one and put in over 1000 and then reduce.\nYou use 1000 because there are 3 decimal places.
854763
Not entirely sure what you're asking, but try this:\n\n3000 + (-710)  \n\nThe above is a sum of two numbers, one positive and one negative.\n\nOf course, hopefully you know that 3000 + (-710) = 3000 - 710.\n\n~ ♥ ~
225035
Try 31545.  Leave off the 0.
986175
It is pretty hard to model a negative number, since negative objects don't really exist.  \n\nYou could use a balance scale and show that negative numbers are on one side and positive numbers are on the other side.  You achieve the same result by adding four objects to the positive side as you do by removing four objects from the negative side.