Is the mean absolute deviation of 20.6 big as of the data: 64, 75, 82, 98, 115, 124, 136?

Question

calculusxy · Answer

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calculusxy · Answer

@jim_thompson5910

kropot72 · Answer

Are you asking whether the mean absolute deviation of the 7 items of data is 20.6?

calculusxy · Answer

I know that I am incorrect for that.

calculusxy · Answer

So now I am trying to find the M.A.D.

calculusxy · Answer

But for this one:

calculusxy · Answer

I am getting an extra number. But I don't know where I am getting it from:
$$\frac{ 43.1 + 57.1 + 30.1 + 51.1 + 47.1 + 52.9 + 70.9 + 57.9  }{ 7 }$$

calculusxy · Answer

I am supposed to get seven integers, but I am getting eight.

kropot72 · Answer

$$\large MAD=\frac{1}{n}\sum_{i=1}^{n}|x _{i}-\bar{x}|$$
where n is the number of observed values, x-bar is the mean of the observed values, and x suffix i are the individual values.

calculusxy · Answer

Okay I got it...

kropot72 · Answer

You're welcome :)