Respuesta :
Using the mean absolute deviation concept, it is found that:
- The mean absolute deviation for people without a high school diploma is 1.25.
- The mean absolute deviation for people with a high school diploma is 1.5.
- The data for people without a high school diploma is more concentrated than the data for people with a high school diploma.
What is the mean absolute deviation of a data-set?
- The mean of a data-set is given by the sum of all observations divided by the number of observations.
- The mean absolute deviation of a data-set is the sum of the absolute value of the difference between each observation and the mean, divided by the number of observations.
- The mean absolute deviation represents the average by which the values differ from the mean.
For people without high-school diplomas, we have that the mean and the MAD are given as follows:
- M = (10 + 9.5 + 11.5 + 13)/4 = 11.
- MAD = (|10 - 11| + |9.5 - 11| + |11.5 - 11| + |13 - 11|)/4 = 1.25.
For people with high-school diplomas, we have that the mean and the MAD are given as follows:
- M = (19 + 15.25 + 14 + 15.75)/4 = 16.
- MAD = (|19 - 16| + |15.25 - 16| + |14 - 16| + |15.75 - 16|)/4 = 1.5.
Hence, due to the lower MAD, we have that:
The data for people without a high school diploma is more concentrated than the data for people with a high school diploma.
More can be learned about the mean absolute deviation concept at https://brainly.com/question/3250070
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