Question

What is the mean absolute deviation for the data shown in the stem-and-leaf-plot?












A.
6.3







B.
6.5







C.
18







D.
21

Answer 1

@jim_thompson5910

Answer 2

first you'll need to write out all the data values you're given here

Answer 3

In the first row, we have `0|9` which means we have 09 or just 9

In the second row, we have `1|1 5` telling us we have 11 and 15

what are the other data values?

Answer 4

20, 23, 30

Answer 5

yes

Answer 6

now we must find the arithmetic mean

add up the values and divide by 6 (there are six data values)

Answer 7

108/6=18

Answer 8

correct, the mean is 18

Answer 9

the pic says 23 is the mean

Answer 10

next you'll subtract the mean from each data value and take the absolute value of each result

eg:
9 - mean = 9 - 18 = -9
take absolute value of -9 to get +9 or just 9

another example
30-mean = 30-18 = 12
take the absolute value of 12 to get 12

Answer 11

no, it says that `2|3` is the same as `23`

Answer 12

they use "means" but the definition of that use is different from what you're thinking

Answer 13

ohhhhhhhhhhhhh

Answer 14

yeah it's unfortunate that there's that overlap in definitions

Answer 15

yea lol thx tho :D

Answer 16

tell me what results you get for each subtraction and absolute value