The list shows the results of six athletes competing in the long jump, which has a target distance of 20 feet.

12 feet, 11 feet, 13 feet, 10 feet, 20 feet, 12 feet

which best describes the results?

a)fairly accurate but not precise
b)fairly precise but not accurate
c)not precise and not accurate
d)fairly precise and fairly accurate

Explanation :

The closeness of a calculated value with the standard value is known as accuracy.

The closeness of two or three observations of an experiment is called precision.

It is given that, the target distance of six athletes is 20 feet. But the distance covered by six athletes are 12 feet, 11 feet, 13 feet, 10 feet, 20 feet and 12 feet.

Here, some values are close to each other but very far from the target distance.

This implies that the given data is not accurate but fairly precise.

Hence, the correct option is (B).

c) not precise and not accurate

Explanation:

Accuracy is how close the measured values are to true values. Precision is how close the measured value are to each other.

Here, it is given that the true value is 20 feet. The measured values are 12 feet, 11 feet, 13 feet, 10 feet, 20 feet and 12 feet . These values are not close true value. Hence the result is inaccurate. Also, the values are not close to each other. Hence, these are not precise.

We can say the result is neither accurate nor precise.

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