ShmoopTube

00:04

And here's your shmoop du jour brought to you by your cup of coffee which is

00:07

now lukewarm you're welcome for the java update back-to-back stem and leaf plots [Girl with a lukewarm cup of coffee and java logo appears]

00:12

below show the ages at which males and females and Carlton's coffee cafe had

00:18

their first cup of joe from the plot we can conclude that what and here the

00:23

potential answers..... Okay back-to-back stem and leaf plots well will they go for

00:31

the three-peat sorry so you may be watching too much sports center alright [Men presenting sports center]

00:35

so first things first let's break down what this thing is telling us we've got

00:38

males on the left and females on the right calm down this isn't an orthodox [Guys standing on the left and girls on the right holding 'Dont' segregate us' signs]

00:42

wedding well the middle column tells us the first digit in the age of each

00:46

individual while each number to the right or left help us the second digit

00:50

in each person's age for example because there's no number in the middle column [Middle column of table circled green]

00:55

first row we can assume that there are three 9 year old males and one 8 year old male

01:01

and one 9 year old female then in the second row every age starts with a

01:06

one we've got males aged 13 12 11 11 and females aged 12 14 16 and so on a lot of [Man wipes sweat from his forehead]

01:14

them and we're running out of breath.... so now to our answer

01:18

choices...And we conclude that A female had fewer outliers than males well according

01:23

to this stem and leaf plot nearly all females have their first cup of joe

01:26

during their teenage years with some of those older ones being considered

01:30

outliers whereas with the boys they're all pretty spread out making it harder

01:35

to identify any of them as outliers in fact it's going to be harder to identify [Men wearing balaclava's over their face]

01:38

them at all as long as they are wearing those ski masks over their heads yeah

01:42

okay how about C; is the female distribution skewed left no just the

01:47

opposite with a bunch of apparently bleary-eyed stressed-out teenagers [Girl drinking a cup of coffee]

01:50

pounding the job out of the distribution is actually skewed right so we can

01:54

eliminate C.. Can we conclude that the male distribution is

01:58

symmetric no.. see how there are fewer males of the older ages yeah that tells

02:02

us there is no symmetry here so buh-bye D... what about E females drink more coffee

02:07

than males...all we're being told here is the ages at which people [A restroom with a linear graph]

02:12

take their first sip, we have no idea whether they try it once they are done-zo

02:18

or if they're suddenly hooked for life, so E aint it no the only thing we [Girls dressed as zombies]

02:22

know for sure is B more males have the first cup of coffee as a preteen than

02:28

did females, right here 4 guys one gal answer B.. done well there you go some

02:34

free marketing research for you starbucks, you're welcome [Zombie man and girl chase a starbucks employee]

Full Transcript