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Svetlanka [38]
3 years ago
6

What is the standard deviation of the data set? 7, 3, 4, 2, 5, 6, 9 Round the answer to the tenths place.

Mathematics
2 answers:
Ainat [17]3 years ago
3 0
The standard deviation would be A. 2.4
Stels [109]3 years ago
3 0

Answer:

The correct option is A.

Step-by-step explanation:

The given data is

7, 3, 4, 2, 5, 6, 9

The mean of the data is

\bar{x}=\frac{\sum{x}}{n}=\frac{36}{7}=5.142857

The standard deviation of the data is

\sigma=\sqrt{\frac{\sum{(x-\bar{x})^2}}{n-1}

Using the below table put the values in the above formula,

\sigma=\sqrt{\frac{34.85714}{7-1}

\sigma=\sqrt{5.80952381}

\sigma=2.410295378

\sigma\approx 2.4

Therefore the correct option is A.

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