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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?
AP Statistics: Exploring Data Drill 1, Problem 2. Which of the following is the best way to display this type of data?
AP Statistics: Exploring Data Drill 1, Problem 5. Which pieces of information would we need to create this graph?
AP Statistics 3.5 Exploring Data 4 Views
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Description:
AP Statistics 3.5 Exploring Data. How much should we expect to pay if we sent only 10 texts this month?
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..
Full Transcript
- 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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