ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos


Statistics and Probability Videos 134 videos

SAT Math 3.5 Numbers and Operations
174 Views

SAT Math 3.5 Numbers and Operations

SAT Math 1.1 Numbers and Operations
280 Views

SAT Math 1.1 Numbers and Operations. How many combinations of beverage and cereal can be made?

SAT Math 5.5 Numbers and Operations
182 Views

SAT Math 5.5 Numbers and Operations

See All

Using Trees 212 Views


Share It!


Description:

Language:
English Language

Transcript

00:00

Thank you We sneak in Using trees allah shmoop all

00:08

right we admit it We're total tree huggers the big

00:11

leafy things Those are okay too way actually met these

00:16

guys well in math trees are a tough place to

00:19

build a nest there not as pretty in the fall

00:21

and you can't carve your initials into their trunk Man

00:24

are they useful Any time we're looking to derive probabilities

00:27

from a scenario A tree can do the trick We'll

00:33

show you what we mean with tree tree tree lovers

00:37

have thrown a function saplings into a wheel girl and

00:40

they've asked you to randomly pick one plan No idea

00:43

why they've asked you to do it You must have

00:45

a trustworthy face anyway you're told there's an even split

00:50

between disingenuous and coniferous tree saplings and the root balls

00:55

are wrapped in an even distribution of red blue and

00:58

green burlap heart So there's no link between tree type

01:03

and burlap rapping You might have a decision tree wrapped

01:06

in red blue or green and the same with the

01:08

first one Yeah no not the carnivorous ones Side there

01:16

Park is worse than their bite Are We confined all

01:20

the possible combinations by making a tree at one of

01:23

these things So we start with our trunk at the

01:25

top All right so our tree is a little inverted

01:30

And we have two main branches assiduous in coniferous each

01:34

with a fifty fifty chance of being chosen So we

01:36

label each zero point five for each type Three There

01:41

are three small branches representing the burlap colors thirty three

01:45

percent chance for each of those So will a bullet

01:48

point Three three Right now to get the odds of

01:52

anyone combination being drawn we simply multiply the first percentage

01:56

by the second chances of drawing a kanye first tree

01:59

with a blue burlap point five times point three three

02:03

that time seems really important which equals point one six

02:06

or sixteen percent What if we don't have an even

02:09

distribution of three types are a little worried If we

02:12

have a seventy five percent disingenuous and twenty five percent

02:15

coniferous distribution way simply label them point seven five and

02:19

point two five instead right here Now our odds of

02:22

picking certain combinations will be different but we can still

02:25

figure him out by using our tree green disingenuous Well

02:28

just point seven five times Point three three Right here

02:31

and equals point two five Blue coniferous Well point two

02:35

five here Times point through three here and you get

02:37

point away Three or eight point three percent What if

02:40

we want to know the chances of getting a green

02:42

decision for blue coneflowers Well easy We just add the

02:47

two individual probabilities together they'll point two five plus point

02:51

eight three equals point three Three or thirty three percent

02:57

By now you can probably see why we're fighting so 00:02:59.09 --> [endTime] hard to save this tree Peace man Wow

Related Videos

SAT Math 6.1 Geometry and Measurement
3974 Views

SAT Math 6.1 Geometry and Measurement

CAHSEE Math 3.4 Statistics, Data, and Probability I
363 Views

Statistics, Data, and Probability I: Drill Set 3, Problem 4. How many different avatars can be created based on the given options?

CAHSEE Math 3.2 Statistics, Data, and Probability II
224 Views

Statistics, Data, and Probability II Drill 3 Problem 2. Which two sports together make up for the preferences of more than half of all those w...

CAHSEE Math 3.3 Statistics, Data, and Probability II
198 Views

Statistics, Data, and Probability II Drill 3 Problem 3. One hundred twenty of those who were asked preferred what sport?

Pre-Algebra: Sampling Methods
1865 Views

If you're looking for tips on how to score more free samples at Yogurtland, you've got the wrong video.