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Helga [31]
3 years ago
12

Question

Mathematics
1 answer:
Harrizon [31]3 years ago
6 0

Answer:

<u>Variance</u><u> </u><u>is</u><u> </u><u>2</u><u>5</u><u>6</u>

Step-by-step explanation:

Variance:

var =   \frac{ ({ \sum x})^{2} }{n}  -  {( \frac{  \sum x}{n} })^{2}

x is the number or item in the data

n is the number of terms

{ \tt{ \sum x = (12 + 7 + 6 + 4 + 11)}} \\ { \tt{ \sum x = 40}}

Therefore:

variance =  \frac{ {40}^{2} }{5}  -  { (\frac{40}{5}) }^{2}  \\  \\  = 320 - 64 \\ variance = 256

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