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Pre-Algebra Videos 36 videos

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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?

Language:
English Language

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.

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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