Question

Here are the science test scores from Ms. O’Donnell’s class:

55, 60, 70, 70, 75, 75, 75, 80, 80, 85, 85, 85, 85, 90, 90, 95, 100

Find the MAD.
please hurry i need answers
(1 point)
The MAD is

Answer 1

wrong

Answer 2

still wrong if this one is wrong im going to stop using questions llc and use brainly

Answer 3

9.8824

Answer 4

I apologize for the mistake in my previous response. Let me recalculate the MAD for you.

To find the MAD (Mean Absolute Deviation), we first need to find the mean of the test scores:

Mean = (55 + 60 + 70 + 70 + 75 + 75 + 75 + 80 + 80 + 85 + 85 + 85 + 85 + 90 + 90 + 95 + 100) / 17
Mean = 1160 / 17 = 68.2353 (approximately)

Next, we calculate the absolute deviations of each score from the mean:

|55 - 68.2353| = 13.2353
|60 - 68.2353| = 8.2353
|70 - 68.2353| = 1.7647
|70 - 68.2353| = 1.7647
|75 - 68.2353| = 6.7647
|75 - 68.2353| = 6.7647
|75 - 68.2353| = 6.7647
|80 - 68.2353| = 11.7647
|80 - 68.2353| = 11.7647
|85 - 68.2353| = 16.7647
|85 - 68.2353| = 16.7647
|85 - 68.2353| = 16.7647
|85 - 68.2353| = 16.7647
|90 - 68.2353| = 21.7647
|90 - 68.2353| = 21.7647
|95 - 68.2353| = 26.7647
|100 - 68.2353| = 31.7647

Now, we find the sum of these absolute deviations:

Sum of absolute deviations = 13.2353 + 8.2353 + 1.7647 + 1.7647 + 6.7647 + 6.7647 + 6.7647 + 11.7647 + 11.7647 + 16.7647 + 16.7647 + 16.7647 + 16.7647 + 21.7647 + 21.7647 + 26.7647 + 31.7647
Sum of absolute deviations = 244.2941

Finally, we calculate the MAD by dividing this sum by the number of scores (17):

MAD = 244.2941 / 17
MAD = 14.3767 (approximately)

Therefore, the Mean Absolute Deviation (MAD) of the science test scores is approximately 14.3767.

Answer 5

I apologize for the mistake in my previous responses. Let me recalculate the MAD for you.

To find the MAD (Mean Absolute Deviation), we first need to find the mean of the test scores:

Mean = (55 + 60 + 70 + 70 + 75 + 75 + 75 + 80 + 80 + 85 + 85 + 85 + 85 + 90 + 90 + 95 + 100) / 17
Mean = 1260 / 17 = 74.1176

Next, we calculate the absolute deviations of each score from the mean:

|55 - 74.1176| = 19.1176
|60 - 74.1176| = 14.1176
|70 - 74.1176| = 4.1176
|70 - 74.1176| = 4.1176
|75 - 74.1176| = 0.8824
|75 - 74.1176| = 0.8824
|75 - 74.1176| = 0.8824
|80 - 74.1176| = 5.8824
|80 - 74.1176| = 5.8824
|85 - 74.1176| = 10.8824
|85 - 74.1176| = 10.8824
|85 - 74.1176| = 10.8824
|85 - 74.1176| = 10.8824
|90 - 74.1176| = 15.8824
|90 - 74.1176| = 15.8824
|95 - 74.1176| = 20.8824
|100 - 74.1176| = 25.8824

Now, we find the sum of these absolute deviations:

Sum of absolute deviations = 19.1176 + 14.1176 + 4.1176 + 4.1176 + 0.8824 + 0.8824 + 0.8824 + 5.8824 + 5.8824 + 10.8824 + 10.8824 + 10.8824 + 10.8824 + 15.8824 + 15.8824 + 20.8824 + 25.8824
Sum of absolute deviations = 166.5882

Finally, we calculate the MAD by dividing this sum by the number of scores (17):

MAD = 166.5882 / 17
MAD = 9.7946

Therefore, the Mean Absolute Deviation (MAD) of the science test scores is 9.7946.