arithmetic mean of-4, 5, 6, 9

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`x`²	`x`^□	log_□	√☐	^□√☐	≤	≥	□□	·	÷	`x`^◦	π
(☐)^′	`ddx`	∂∂`x`	∫	∫_□^□	lim	∑	∞	`θ`	(`f` ◦ `g`)	`f`(`x`)

☐²

x^☐

√☐

^□√☐

□□

log_□

θ

∞

∫

ddx

≥	≤	·	÷	`x`^◦	(☐)	\|☐\|	(`f` ◦ `g`)	`f`(`x`)	ln	`e`^☐
(☐)^′	∂∂`x`	∫_□^□	lim	∑	sin	cos	tan	cot	csc	sec

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average −4, 5, 6, 9

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Arithmetic Mean

The arithemtic mean (average) is the sum of the values in the set divided by the number of elements in that set.
If our data set contains the values a₁, … , a_n (n elements) then the average=1n ∑_i=1ⁿa_i

Compute the sum of the data set: ∑_i=1ⁿa_i=16

Compute the number of terms in the data set: n=4

Divide the sum by the number of terms and simplify: 4

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−▭▭	<	7	8	9	÷	`AC`
+▭▭	>	4	5	6	×	☐☐☐
×▭▭	(	1	2	3	−	`x`
▭ \|▭	)	.	0	=	+	`y`

arithmetic mean of-4, 5, 6, 9

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