Answer:
The mean absolute deviation (MAD) is 0
Step-by-step explanation:
20 + 16 + 21 + 16 + 22 + 16 + 15
= 126 ÷ 7 = 18
(20 - 18) + (16 - 18) + (21 - 18) + (16 - 18) + (22 - 18) + (16 - 18) + (15 - 18) =
2 +(-2) + 3 + (-2) + 4 + (-2) + (-3) = 0 ÷ 7= 0
The mean absolute deviation (MAD) is 0
There are two solutions for this problem. It depends if order matters or not. Since it is not mentioned in the problem, it is safe to assume that order does not matter and that choosing can be done at random. Then, this is a combination problem:
nCr = n!/r!(n-r)!
where n=13 because there are <span>13 qualified candidates</span>, and r=8 because you choose 8 chiefs at a time
nCr = 13!/8!(13-8)! = 1,287 ways
1.3 is the answer to your question
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<h2>
A formula for the nth term in given arithmetic sequence = 0.5(n - 1) or, (n - 1)</h2>
Step-by-step explanation:
Given,
= 0, = 0.5, = 1, = 1.5, ...
To find, a formula for the nth term in given arithmetic sequence = ?
Here, first term (a) = = 0 and
common difference(d) = - = - = 0.5 - 0 = 0.5
We know that,
The nth term of the arithmetic sequence
Put a = 0 and d = 0.5, we get
= 0 +(n - 1)0.5
= 0.5(n - 1) or, (n - 1)
∴ A formula for the nth term in given arithmetic sequence = 0.5(n - 1) or, (n - 1)