The stem-and-leaf plot shows the heights in centimeters of Teddy Bear sunflowers grown in two different types of soil.

a) Describe the overlap of the two sets of data.

b) Calculate the mean of each data set.

c) Calculate the mean absolute deviation (MAD) of each data set.

d) Which set is more variable? How do you know?

Question

The stem-and-leaf plot shows the heights in centimeters of Teddy Bear sunflowers grown in two different types of soil.

a) Describe the overlap of the two sets of data.

b) Calculate the mean of each data set.

c) Calculate the mean absolute deviation (MAD) of each data set.

d) Which set is more variable? How do you know?

anonymous · Answer

|dw:1433160099790:dw|

anonymous · Answer

Key: 9l6 means 69                 Key:  5l8 means 58

anonymous · Answer

Sorry the numbers look a little uneven

anonymous · Answer

It's still the same though

anonymous · Answer

@rvc @HelpOfTheGods

anonymous · Answer

the asnwer to the question is c

anonymous · Answer

It's not a multiple choice question

anonymous · Answer

oh well u still have to do step c lol

anonymous · Answer

i was getting super confused i was like wtf

anonymous · Answer

lol yeah

anonymous · Answer

can you still help?

anonymous · Answer

@rvc @KendrickLamar2014

only_hanaaa · Answer

which parts do you need help in?

anonymous · Answer

All of them

only_hanaaa · Answer

okay, in part a you need to describe how both of the sets have the same numbers, for example they have number 70 in common, that's how they overlap

only_hanaaa · Answer

for part , you need to find all the number in each data set for soil A and B, add all those numbers up and divide them by how many numbers there are, for example if you had the data set {90, 79, 66, 80} and you added them up to get 315, now you divide it by 4 since there are 4 numbers and you get 78.75, you understanding?

only_hanaaa · Answer

^^part B, sorry typo...

anonymous · Answer

ok

anonymous · Answer

What do you mean for part a you describe what numbers they have in common? (I'm pretty dumb)

only_hanaaa · Answer

okay i already gave you the answer for part a, but ill explain...overlap means how to they have the same numbers, and you really don't have to describe the numbers i dont know why they put that in the question, but yea i think 70 is the only number they have in common but id check gain just in case...

mathmate · Answer

@izzy529 Many math problems can be solve by starting to understand the terms used. Here the keyword is "stem and leaf plot". The moment you understand what the numbers in the plot mean, things will look MUCH easier. You can start by reading how a stem and leaf plot is constructed: http://www.purplemath.com/modules/stemleaf.htm Then write down the dataset (or interpret the plot) as two separate lists. The questions will then make a lot more sense. At that point, if you still have questions, please post again.

anonymous · Answer

ok thanks @mathmate

mathmate · Answer

You're welcome!  :)