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Exploring Data Videos 25 videos

AP Statistics 1.2 Exploring Data
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AP Statistics: Exploring Data Drill 1, Problem 2. Which of the following is the best way to display this type of data?

AP Statistics 1.5 Exploring Data
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AP Statistics: Exploring Data Drill 1, Problem 5. Which pieces of information would we need to create this graph?

AP Statistics 2.3 Exploring Data
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AP Statistics: Exploring Data Drill 2, Problem 3. Which set of points, if put in a scatterplot, would show us a positive correlation?

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AP Statistics 3.5 Exploring Data 4 Views


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AP Statistics 3.5 Exploring Data. How much should we expect to pay if we sent only 10 texts this month?

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Transcript

00:04

And here's your shmoop du jour brought to you by cell phone

00:07

when they die on you it's even sadder than well what happened to your pet [kids fighting and cell phone falls into fish tank]

00:11

fish tiger... Alright we ran a linear regression on the monthly cost of owning

00:18

a cell phone it gave us following in the output right there based on this output

00:22

how much should we expect to pay if we send only 10 texts this month..

00:27

All right, here are the potential answers.. So this problem wants us to [Bill break down of cell phone usage]

00:33

assume that we sent only 10 texts in the last month so apparently we got trapped

00:37

underneath a large rock somewhere and have been unable to call for help hopefully [rock falls on top of a man]

00:41

send out a search party soon..But okay let's pretend that we only send 10

00:45

texts according to the output we're given how are we supposed to figure out

00:49

what that will run us dinero-wise... Hopefully not option B or else we are [Man doing calculations at a desk]

00:54

definitely changing providers the trick here is to realize that we can plug

00:58

the information we have into slope-intercept form and then just solve [boy studying at his desk]

01:02

for the answer well in this scenario the constant acts as a y-intercept while the

01:07

text messages value acts as the slope.. So taking the formula Y equals MX plus B

01:12

...We plug in 29.99 for B and point 05 for M, which gives

01:20

us y equals point 05 X + 29.99 now time to plug in our number of texts, which [Person using a mobile phone to access texts]

01:26

we're told is 10, that goes in place of X and crunching numbers we get y equals [animal chewing]

01:33

point 05 x 10 + 29.99 for 30.49 Thirty dollars 49 cents answer A...

01:40

probably could've just solved this problem on your cell phone but well it's

01:43

currently still out of reach [man trapped under rock and lizards throw cell phone back and forth]

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Want to pull an Oliver Twist and ask us for more? We've gotcha covered. Head over to /video/subjects/math/test-prep/ap-statistics/ for more AP...