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Statistics and Probability Videos 134 videos

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CAHSEE Math 1.2 Statistics, Data, and Probability II 199 Views


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Description:

Statistics, Data, and Probability II Drill 1, Problem 2. Based on the chart, which of the following statements is true?

Language:
English Language

Transcript

00:03

Here’s your shmoop du jour…

00:06

Sharon has been worried lately that she spends too much of her time making pie charts.

00:11

So she’s decided to take stock of her life… in the form of a pie chart.

00:16

Baby steps there, Sharon.

00:18

The pie chart below shows Sharon's activities on a typical school day. 

00:22

Based on the chart, which of the following statements is true?

00:25

And here are the potential answers...

00:30

We are being asked to just read a graph and deal with a bunch of random questions which…

00:34

we really have to cover one by one.

00:36

So… as Nike suggests… let’s just do it.

00:40

Potential answer A:

00:42

Amount of time on homework: 13%

00:44

Amount of time on free time: 17%

00:47

Total 30%

00:49

Amount of time sleeping: 33%

00:52

So A is false – this girl must be beautiful – she certainly gets enough beauty sleep.

00:56

OK, try B.

00:58

Homework: 13%

00:59

Free time: 17%. Total 30%

01:02

Versus time spent at school: 25%. Clearly not equal.

01:07

OK, C.

01:08

Free time at 17% plus sports at 8% plus eating at 4% totals 29% - nope – she slept 33%

01:15

of the time so C is false as well.

01:18

D had better be true or we’re in bad shape.

01:22

D.

01:23

Homework: 13%, free time 17% is – yes – less than the 33% she spent sleeping.

01:29

So thank goodness… D is true.

01:31

As in… “Denial.”

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