i. Discuss if this distribution is positively or negatively skewed. ii. Based on the previous answer, is the mean > than median or the mean < than the median? Explain your answer. iii. What is the advantage of using the standard deviation instead of the variance?

Help, thank you!

help

7. A set of data has a variance of 81. What is the standard deviation? SAMSUNG

Maria wants to know if the number of words on a page in her earth science 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 Earth science| 48.9 41 9.2 Math 34.5 44 1.9 She claims that because the mean number of words on each page in the earth science book is greater than the mean number of words on each page in the math book, the earth science book has more words per page. Based on the data, is this a valid inference? O Yes, because the mean is larger in the earth science book. O No, because the mean is larger in the earth science book. O Yes, because there is a lot of variability in the earth science book data. O No, because there is a lot of variability in the earth science book data.

are all equal. 3. If a set of grades for a class has a large range and a small standard deviation, what can you say about the class? Include an interpretation that is specific to grades in a class. 4. Why is the median less affected by skewed data than the mean? 5. Is most data likely to be skewed or symmetric? There is no right or wrong here but discuss and take a side on the issue.

Which one?

Can I please get some help. Thank you so much!

Mario's weekly poker winnings have a mean of $353 and a standard deviation of $67. Last week he won $185. How many standard deviations from the mean is that?

could you please answer it with pen and paper?