Find the mean median and mode of the set of data round to the nearest tenth
15,13,9,9,7,1,11,10,13,1,13
2 answers
http://www.purplemath.com/modules/meanmode.htm
So, in order to find the MEAN:
Add all of them together then divide by how many numbers there are.
So 15+13+9+9+7+1+11+10+13+1+13=102
Then we divide. So 102/11=9.272727.... repeating. So rounded to the nearest tenth, the MEAN=9.3
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In order to find the MEDIAN:
We list them in numerical order and find the middle number.
So we list then as 1,1,7,9,9,10,11,13,13,13,15.
Then, we cross them off equally on both sides to get to a middle number. The two middle numbers are 10 and 11. So we have to find the middle between those, which means the MEDIAN=10.5
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Finally, we have to find the MODE:
We have to see which number appears the most often in the set of numbers.
The number 1 appears 2 times.
7 appears 1 time.
9 appears 2 times.
10 appears 1 time.
11 appears 1 time.
13 appears 3 times.
And 15 appears 1 time.
Therefore, the MODE=13.
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Sorry for it being so long but I wanted to talk you through it so that you know how to do it in the future.
Add all of them together then divide by how many numbers there are.
So 15+13+9+9+7+1+11+10+13+1+13=102
Then we divide. So 102/11=9.272727.... repeating. So rounded to the nearest tenth, the MEAN=9.3
~
In order to find the MEDIAN:
We list them in numerical order and find the middle number.
So we list then as 1,1,7,9,9,10,11,13,13,13,15.
Then, we cross them off equally on both sides to get to a middle number. The two middle numbers are 10 and 11. So we have to find the middle between those, which means the MEDIAN=10.5
~
Finally, we have to find the MODE:
We have to see which number appears the most often in the set of numbers.
The number 1 appears 2 times.
7 appears 1 time.
9 appears 2 times.
10 appears 1 time.
11 appears 1 time.
13 appears 3 times.
And 15 appears 1 time.
Therefore, the MODE=13.
~
Sorry for it being so long but I wanted to talk you through it so that you know how to do it in the future.
1 answer