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Mean, Median, and Mode Videos 18 videos

Mean, Median, and Mode
20196 Views

Did they really have to make them all start with an M?

Geometric Mean
2970 Views

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 1.4 Pre-Algebra
352 Views

ACT Math Section: Pre-Algebra Drill 1, Problem 4. Can you find the median?

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ACT Math 1.4 Pre-Algebra 352 Views


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Description:

ACT Math Section: Pre-Algebra Drill 1, Problem 4. Can you find the median?

Language:
English Language

Transcript

00:03

A little birdie told us you wanted to shmoop a math problem...

00:08

A half dozen super-smart Martians took an IQ test to see how

00:12

they matched up with the average human brain.

00:15

Find the median of their IQ scores.

00:17

Here they are: 120, 206, 138, 198, 150, and 175.

00:23

And here are the potential answers...

00:29

So what's this problem asking?

00:30

Well, it's really more of a vocab question than a math problem.

00:33

The word of the day...

00:35

MEDIAN Uh... the mathematical median.

00:40

But the idea comes from the same place -- road medians divide things in the middle.

00:45

For median calculations we first put the numbers in order, low to high.

00:49

We sing the song: you know how it goes...

00:51

C'mon now sing it with me... Throw out the high.... throw out the low...

00:55

throw out the high... throw out the low....

00:58

And uh... here we stop. Works great on campfire with marshmallows.

01:02

We have two left -- 150 and 175.

01:05

To get the median, we just average the last two.

01:08

150 plus 175 is 325... divided by two and you get 162.5.

01:14

So the answer is C.

01:16

"As in, "Come in peace."

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