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cuavang55
20.07.2019 •
Mathematics
Stefano calculated the mean absolute deviation for the data set 32, 4, 12, 40, 20, and 24. his work is shown below. step 1: find the mean. mc006-1.jpg step 2: find each absolute deviation. 10, 18, 10, 18, 2, 2 step 3: find the mean absolute deviation. mc006-2.jpg what is stefano’s error? stefano should have divided by 5 when finding the mean. stefano found the absolute deviation of 20 incorrectly. stefano should have divided by 6 when finding the mean absolute deviation. stefano did not find the correct value for the mean.
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Ответ:
To find the mean, you will find the sum of all the numbers and divide by how many numbers there are.
Mean: 4 + 12 + 20 + 24 + 32 + 40 = 132
132/6 = 22
Mean: 22
To find the mean absolute deviation, you find how far away each of the numbers are from the mean. Find the sum of these and divide by the same number of numbers.
(22 - 4) + (22-12) + (22-20) +(24 - 22) + (32-22) + (40-22)
18 + 10 + 2 + 2 + 10 + 18 = 60
60/6 = 10
The MAD is 10.
I think the correct answer is that Stefano should have divided by 6 when finding the mean absolute deviation.
Ответ:
16/25
Step-by-step explanation:
4/10=40/100
24/100=24/100
40+24=64
64/100
16/25