I used 57 points to put this question up!! If you answer, you get part of that! 4 parts!!
Find the means!!
3. 20, 16, 20, 17.5, 19.5, 18, 23

4. 21, 20, 24, 22, 22, 22, 16

5. 100, 90, 72, 95, 85, 83, 89, 81, 86, 93, 98

6. 4, 3, 1, 1, 2, 2, 3, 3, 2

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28-01-2015
Mathematics

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I used 57 points to put this question up!! If you answer, you get part of that! 4 parts!!
Find the means!!
3. 20, 16, 20, 17.5, 19.5, 18, 23

4. 21, 20, 24, 22, 22, 22, 16

5. 100, 90, 72, 95, 85, 83, 89, 81, 86, 93, 98

6. 4, 3, 1, 1, 2, 2, 3, 3, 2

Sagot :

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JamieBossidn JamieBossidn · Answer 1 · 2015-01-28T15:23:57-05:00

JamieBossidn JamieBossidn

28-01-2015

To find the mean, you add up all the numbers and divide by the number of terms in the set. So...
3. (20+16+20+17.5+19.5+18+23) / 7 = 134 / 7 = about 19.14285714 or 19 and 1/7
4. (21+20+24+22+22+22+16) / 7 = 147 / 7 = 21
5. (100+90+72+95+85+83+89+81+86+93+98) / 11 = 972 / 11 = about 88.363636... or 88 and 4/11
6. (4+3+1+1+2+2+3+3+2) / 9 = 21 / 9 =2 .333... or 2 and 1/3

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