Kim wants to know if the number of words on a page in her math book is generally more than the number of words on a page in her
poetry 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. ___________________________________________
Book Mean Median Mean absolute deviation |
Math 49.9 43 10.2 |
Poetry 41.5 42 1.1 |
__________________________________________________
Kim claims that because the mean number of words on each page in the math book is greater than the mean number of words on each page in the poetry book, the math book has more words per page. Based on the data, is this a valid inference?
A - No, because there is a lot of variability in the math book data
B -No, because the mean is larger in the math book
C - Yes, because the mean is larger in the math book
D -Yes, because there is a lot of variability in the math book data
i think it's 'A' but i'm not 100% sure, help please.
The mean average difference is not that important, the mean is the only information you need to work out which one has the most words per page. I think the answer is C
