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Can you count how many numbers are in your "leaf plot" ?

16

now count, starting from the top, until you get to number 8
can you do that ?

0?

the key is 2

yes, 2, and the "0" means your number
is 20

next, what is the 9th number? (one past the 8th number)
?

a 6

so what is the 9th number ?

not just 6. remember to "tag on" the key number

oh... 62?

almost. the 2 goes first

so 26

23?

honestly... i'm a little confused.

Here is an example, with the 0 in red

ok

is the 9th number 20? 0
2^

ok

which of the choices *might* be the answer ?

D?

what does choice D say about the median (I can't read it)

The mean is decreased by about 1.2 and the median is decreased by 3.

and what about choice B ?

i'm trying to figure out the mean, but i don't know.

you make a list of the numbers by "tagging on" to the front, the key number

d

that is how you do it.
but first we need to write the numbers
06+08+12+15+18+ etc

i think the total is 61

it is more than that. what are the 16 numbers you are using ?

the key.

added 10 to them

the first two I got from
0 | 6 8
which is "short" for 06 08

what are the numbers you get from the 3rd row ?

10, 10, 10, 16 , 18 and 19

almost. but you put a 1 in front. You should be the "key number" in front

so... 20, 20, 20, 26, 28, 29?

yes,
and finally the last row

20, 21, 22, 22, 24

the last row starts with
3 |
use the "3" (not a 2)

361/16?

361/16?

06+08+12+15+18+20+20+20+26+28+29+30+31+32+32+34
then divide by 16

i got 22.5625

when we add 10 the sum goes from 361 to 371
and the average of the 17 numbers is
371/17=

ok, so would the answer be D?

i was wrong, the answer is B

Yes, choice B is closest. it says the mean goes down by about 0.7

ok, thank you sooooo much. i would have figured it out on my own! :D :D :D :D :D :D :D :D

This problem was a lot of work. Good job.

thanks again :D

yw