Question

What is the mean of Variable A?
http://static.k12.com/calms_media/media/1549000_1549500/1549020/1/ccd22028f314df1a1d19dd0d566c910bd139c026/MS_IMC-141015-108153.jpg

Answer 1

you have 10 numbers (dots)
2 of the dots have an "A" value of 1
2 have a value of 2
1 has a value of 3
that is: 1,1,2,2,3, and so on
list out the values (should be 10 of them)
add them up and divide by 10 to get the average (the mean)

Answer 2

its still confusing @phi

Answer 3

on the axis labeled "A", do you see the number "4" ?
how many dots are plotted above the 4 ?

Answer 4

1

Answer 5

that means we have 1 A with the value 4
and our list (so far) is
1,1,2,2,3,4

how many 5's do we have ?

Answer 6

1

Answer 7

if you look at the 5 (on the A axis), and look up along that line, there are no dots.

Answer 8

ohh

Answer 9

so no A has 5 as a value. but you do have one 6, one 7, one 8, and one 10. the entire list is
1,1,2,2,3,4,6,7,8,10

now find the average of that list (add up and divide by how many numbers there are)

Answer 10

4.4?

Answer 11

? did you add wrong ?

Answer 12

maybe let me recheck

Answer 13

no, that's correct 44/10 = 4.4

Answer 14

i added right

Answer 15

oh ok lol