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Mathematics

1 answer:

Sidana [21]2 years ago

3 0

Answer: 39

Step-by-step explanation: All the numbers in organized order: 30, 32, 32, 36, 42, 43, 44, 45. The median is basically the middle of the numbers, and since we have 8 numbers, the middle of the eight numbers is 36, and 42. Now we add those 2 middle numbers together, and divide them by 2 so we can find the median of those 2 middle numbers. (36+42)/2 is equal to 39, so the final answer is 39.

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What is the mean absolute deviation?

Lostsunrise [7]

Answer:

0.8 cm

Step-by-step explanation:

The formula for MAD is attached in the picture.

x_i are the values (data)

x bar is the mean

n is the number of numbers (data)

For figuring out MAD, basically, <em>we subtract the mean from each of the values respectively and take the absolute value and SUM for all of the numbers in the data set. Then we divide by n, the number of numbers.</em>

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Let's do this:

MAD = $\frac{|2-3|+|2-3|+|2-3|+|2-3|+|3-3|+|3-3|+|3-3|+|4-3|+|4-3|+|5-3|}{10}\\=\frac{1+1+1+1+0+0+0+1+1+2}{10}\\=\frac{8}{10}=0.8$