91,90,90,88,88,86,87 do you add them all together and then divide by 7?
2007-09-23 08:52:19 · 12 answers · asked by Min 1 in Science & Mathematics ➔ Mathematics
Yes you got it!
So the average is about 88.57
2007-09-23 08:56:51 · answer #1 · answered by Mythical Tales 6 · 5⤊ 1⤋
that is one way.... The other way is ... take the lowest one
which is 86 (or 86+0), then rewrite all the numbers as, 86+0(86), 86+1(87), 86+2 (88), 86+2 (88), 86+4 (90), 86+4 (90), 86+5 (91),
so now add = 0 + 1+2+2+4+4+5 = 18 and divide it by 7
which is = 18/7 = 2.57, now add this to 86 .. so the average will be = 86 + 2.57 = 88.57
2007-09-23 16:09:24 · answer #2 · answered by Metallurgist 2 · 1⤊ 1⤋
yes. to find the average of numbers, you always add them together then divide by how many numbers there are.
2007-09-23 15:57:45 · answer #3 · answered by Anonymous · 2⤊ 1⤋
To find the average of any number of values, you must find the sum of all the values, and divide by the number of values.
In this case, add all seven values and divide the sum by the number of values. sum / # of values.
2007-09-23 15:59:03 · answer #4 · answered by gotbigdreams13 1 · 2⤊ 0⤋
add them all together then divide them by 7
2007-09-23 16:00:55 · answer #5 · answered by dolphinprincess_sarah 2 · 2⤊ 1⤋
Yes!
2007-09-24 04:27:49 · answer #6 · answered by Como 7 · 1⤊ 0⤋
Yes.
2007-09-23 15:59:43 · answer #7 · answered by mathmentor 1 · 2⤊ 0⤋
no , just take the two that are repeated, add them and divided by two. 90+88=178/2=89
2007-09-23 16:00:32 · answer #8 · answered by robvelezpr 1 · 1⤊ 2⤋
yes
2007-09-23 15:57:53 · answer #9 · answered by Name 4 · 2⤊ 1⤋
Yes and your answer is
88.57142857
2007-09-23 15:58:01 · answer #10 · answered by NWS Storm Spotter 6 · 1⤊ 1⤋