Find the Geometric Mean 3 , 5 , 8 , 12 , 15

$3$ , $5$ , $8$ , $12$ , $15$

Step 1

Use the formula to find the geometric mean.

$\sqrt[5]{3 \cdot 5 \cdot 8 \cdot 12 \cdot 15}$

Step 2

Multiply $3$ by $5$ .

$\sqrt[5]{15 \cdot 8 \cdot 12 \cdot 15}$

Step 3

Multiply $15$ by $8$ .

$\sqrt[5]{120 \cdot 12 \cdot 15}$

Step 4

Multiply $120$ by $12$ .

$\sqrt[5]{1440 \cdot 15}$

Step 5

Multiply $1440$ by $15$ .

$\sqrt[5]{21600}$

Step 6

Rewrite $21600$ as $2^{5} \cdot 675$ .

Factor $32$ out of $21600$ .

$\sqrt[5]{32 (675)}$

Rewrite $32$ as $2^{5}$ .

$\sqrt[5]{2^{5} \cdot 675}$

Step 7

Pull terms out from under the radical.

$2 \sqrt[5]{675}$

Step 8

Approximate the result.

$7.36021922$

Step 9

The geometric mean should be rounded to one more decimal place than the original data. If the original data were mixed, round to one decimal place more than the least precise.

$7.4$

Find the Geometric Mean 3 , 5 , 8 , 12 , 15

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