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CAHSEE Math 6.4 Statistics, Data, and Probability II 188 Views
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Description:
Statistics, Data, and Probability II Drill 6 Problem 4. What conclusion can be drawn from the graph?
- Statistics and Probability / Summarize, represent, and interpret data on two variables
- Statistics and Probability / Summarize, represent, and interpret data on two variables
- Statistics and Probability / Understand and evaluate random processes underlying statistical experiments
- Statistics and Probability / Make inferences and justify conclusions from sample surveys, experiments, and observational studies
- Statistics and Probability / Summarize, represent, and interpret data on two variables
- Statistics and Probability / Summarize, represent, and interpret data on two variables
- Statistics and Probability / Summarize, represent, and interpret data on two variables
- Statistics and Probability / Understand and evaluate random processes underlying statistical experiments
- Statistics and Probability / Make inferences and justify conclusions
- Mathematical Reasoning / Formulating conjectures
Transcript
- 00:04
Here’s your shmoop du jour…
- 00:06
Mark kept track of the time he spent online each month for the past year.
- 00:10
The truth can be scary. This guy likes his Minecraft.
- 00:14
The graph below shows the time Mark spent online in hours and the cost of the internet access.
- 00:19
What conclusion can be drawn from the graph?
Full Transcript
- 00:23
And here are the potential answers...
- 00:26
OK, so this question is a scatter plot that… isn’t very scattered.
- 00:29
It basically looks like the heart monitor of a guy whose heart isn’t… doing so hot.
- 00:34
Let’s just read through the potential answers and, hopefully, one should jump out at us.
- 00:38
A “He spends approximately the same amount of time online each month.”
- 00:43
Well – no – he’s all over the map from here to here… like 2 hours to about 65.
- 00:48
So A is false.
- 00:49
B “He is charged according to the time spent online.”
- 00:54
No – the dollar amounts basically never change – he clearly has the “all you can eat" plan.
- 01:01
C “He is charged the same no matter how much time he spends online.” Correctamundo.
- 01:08
D “He is charged according to how much he downloads.”
- 01:11
Fortunately for Mark… no he’s not.
- 01:13
Or else he’d have to field some pretty tough questions from his mother… and the family therapist.
- 01:22
So the answer is C.
- 01:23
We also would have accepted that the answer is… “Mark really needs to get a life.”
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