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ACT Aspire Math Videos 91 videos

ACT Aspire Math: Solving for x when It's in the Denominator
25 Views

Given the following equation, what is x?)

ACT Aspire Math: Comparing Cost per Pound of Hello Kitty Candy
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At the local candy store down the street, three pounds of Hello Kitty gummy treats cost $6.42. At the candy store across town, five pounds of Hello...

ACT Aspire Math: How Many Hundredths Are There in Four Tenths?
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How many hundredths are there in four tenths?

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ACT Aspire Math: Understanding Random Sampling 0 Views


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Description:

Alexis wants to find out approximately how many hours of television the people in her hometown watch per day.

Which group should she survey for the most representative results?


Transcript

00:01

Okay Mash bumpers here kind of word problem ish thing

00:05

for you Alexis wants to find out approximately how many

00:08

hours of television the people in her home town watch

00:10

per day Which group should she survey for the most

00:14

representative results But one of the golden rules of statistics

00:23

is that samples must always be random for the results

00:26

to be valid And representative Think about it this way

00:29

If we wanted to know the average amount of netflix

00:31

watch by people in new york while we wouldn't survey

00:34

the top ten self proclaimed netflix addicts we'd want to

00:38

survey ten random people in new york Well random samples

00:41

should include a diverse group of people like a group

00:43

of high school students A isn't diverse in terms of

00:46

age while group of wealthy people isn't economically diverse Alexis

00:50

mom's co workers probably aren't very diverse in terms of

00:53

money or age like annie but a few people she

00:55

encounters randomly in a highly trafficked grocery store Maybe that's

00:59

not perfect but well everybody's got to eat right And

01:02

that's the most diverse of this group though the answer

01:04

is d

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