Find the Mean 69 , 72 , 70 , 63 , 87 , 73 , 65 , 81 , 75 , 82 , 85 , 66 , 64 , 82 , 61

$69$ ,

$72$ ,

$70$ ,

$63$ ,

$87$ ,

$73$ ,

$65$ ,

$81$ ,

$75$ ,

$82$ ,

$85$ ,

$66$ ,

$64$ ,

$82$ ,

$61$

Step 1

The mean of a set of numbers is the sum divided by the number of terms.

$\frac{69 + 72 + 70 + 63 + 87 + 73 + 65 + 81 + 75 + 82 + 85 + 66 + 64 + 82 + 61}{15}$

Step 2

Simplify the numerator.

Add

$69$ and

$72$ .

$\frac{141 + 70 + 63 + 87 + 73 + 65 + 81 + 75 + 82 + 85 + 66 + 64 + 82 + 61}{15}$

Add

$141$ and

$70$ .

$\frac{211 + 63 + 87 + 73 + 65 + 81 + 75 + 82 + 85 + 66 + 64 + 82 + 61}{15}$

Add

$211$ and

$63$ .

$\frac{274 + 87 + 73 + 65 + 81 + 75 + 82 + 85 + 66 + 64 + 82 + 61}{15}$

Add

$274$ and

$87$ .

$\frac{361 + 73 + 65 + 81 + 75 + 82 + 85 + 66 + 64 + 82 + 61}{15}$

Add

$361$ and

$73$ .

$\frac{434 + 65 + 81 + 75 + 82 + 85 + 66 + 64 + 82 + 61}{15}$

Add

$434$ and

$65$ .

$\frac{499 + 81 + 75 + 82 + 85 + 66 + 64 + 82 + 61}{15}$

Add

$499$ and

$81$ .

$\frac{580 + 75 + 82 + 85 + 66 + 64 + 82 + 61}{15}$

Add

$580$ and

$75$ .

$\frac{655 + 82 + 85 + 66 + 64 + 82 + 61}{15}$

Add

$655$ and

$82$ .

$\frac{737 + 85 + 66 + 64 + 82 + 61}{15}$

Add

$737$ and

$85$ .

$\frac{822 + 66 + 64 + 82 + 61}{15}$

Add

$822$ and

$66$ .

$\frac{888 + 64 + 82 + 61}{15}$

Add

$888$ and

$64$ .

$\frac{952 + 82 + 61}{15}$

Add

$952$ and

$82$ .

$\frac{1034 + 61}{15}$

Add

$1034$ and

$61$ .

$\frac{1095}{15}$

Step 3

Divide

$1095$ by

$15$ .

$73$

Find the Mean 69 , 72 , 70 , 63 , 87 , 73 , 65 , 81 , 75 , 82 , 85 , 66 , 64 , 82 , 61

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