Macy wants to know if the number of words on a page in her grammar book is generally more than the number of words on a page in her math 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. Mean Median Mean Absolute Deviation Grammar 49.7 41 8.4 Math 34.5 44 1.9 She claims that because the mean number of words on each page in the grammar book is greater than the mean number of words on each page in the math book, the grammar book has more words per page. Based on the data, is this a valid inference? No, because there is a lot of variability in the grammar book data. Yes, because there is a lot of variability in the grammar book data. Yes, because the mean is larger in the grammar book. No, because the mean is larger in the grammar book.

A median is a middle number in a series of numbers that have been arranged to lift, and it might be more informative of the set of data than the average. When there are extremes in the sequences that might affect the average of the numbers, the median is sometimes employed instead of the mean.

We have:

Number of random samples = 25 pages

Mean Median Mean Absolute Deviation

Grammar 49.7 41 8.4

Math 34.5 44 1.9

As we can see, the MAD for grammar is more than the MAD for the Math.

Thus, the statement second "yes, because there is a lot of variability in the grammar book data" would be correct.

Learn more about the median here:

brainly.com/question/21396105

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sanjisingh0801 sanjisingh0801 · Answer 2 · 2022-07-11T18:32:04+02:00

sanjisingh0801 sanjisingh0801

11-07-2022

the person above me is right

hope it helps

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