Question

Kelly wants to know if the number of words on a page in her geometry book is generally more than the number of words on a page in her science book. She takes a random sample of 25 pages in each book, then calculates the mean, median, and mean absolute deviation for the 25 samples of each book.

Answer 1

Book Mean Median Mean absolute deviation
Geometry 42.9 4 0 1.2
Science 48.5 42 9 .3

Answer 2

Wat am I supposed to find?

Answer 3

Kelly claims that because the mean number of words on each page in the science book is greater than the mean number of words on each page in the geometry book, the science book has more words per page. Based on the data, is this a valid inference?
No, because the mean is larger in the science book
No, because there is a lot of variability in the science book data
Yes, because the mean is larger in the science book
Yes, because there is a lot of variability in the science book data

Answer 4

^^^^^

Answer 5

The third

Answer 6

how did u get that though?

Answer 7

In the table under the word mean, for science it is 48.5 and for math it is 42.9

Answer 8

It pretty much tells u

Answer 9

I don't agree. The variability in the science book is much higher. So the data is much more spread out (meaning that the true center is likely to be different from the mean). There may be an outlier skewing the mean.

Answer 10

I guess but in general, the average is what your looking for. But I definitely do agree

Answer 11

The MAD is quite high.

Answer 12

yeah which is why I'm thinking the variability is high

Answer 13

so my answer would be C. @jim_thompson5910

Answer 14

re-read what I wrote above

Answer 15

I guess. Oodles cas. Believe @jim_thompson5910 is probably right. He is the expert

Answer 16

B

Answer 17

I'm not always perfect, so you may be correct. I'm still sticking with my answer though.

Answer 18

OK so b @jim_thompson5910 ?

Answer 19

lol

Answer 20

Same. Go wit Kim's answer

Answer 21

Jim. Sry autocorrect

Answer 22

k so @jim_thompson5910 says B right

Answer 23

Yes. He is right

Answer 24

k sry lol thanks! :)