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Mean, Median, and Mode Videos 18 videos
The geometric mean of two numbers is the square root of the product. Using proportions, you can set up ratios, cross multiply, and then simplify to...
ACT Math Section: Pre-Algebra Drill 1, Problem 4. Can you find the median?
ACT Math 1.5 Pre-Algebra 299 Views
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Description:
ACT Math Pre-Algebra Drill 1, Problem 5. Can you find the mean?
Transcript
- 00:03
Time for your daily dose of shmoop... Open wide!
- 00:07
Find the mean of the following numbers: 37,
- 00:09
38, 45, 67, 23, 81. And here are the potential answers...
- 00:18
This... is nice.
- 00:20
This... is mean.
Full Transcript
- 00:23
But we're talking about mean in mathematical terms... here, it's just a fancy word for average.
- 00:27
To calculate averages, we first add the numbers...
- 00:30
...to get a total of 291
- 00:33
Since there were 6 numbers, we divide by 6.
- 00:39
So 6 goes into 29 four times, leaving 5... then 6 goes into 51 eight times, leaving 3...
- 00:48
so we have 48 and 3 sixths... or 48 and a half... or 48.5.
- 00:55
So the answer is B.
- 00:57
As in, "Baby needs another nap."
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