which is more precise 1yd or 3ft?

Question

 So, in class today, we were recovering precision and accuracy; one of the questions on our homework is, 'Which is more precise? 1 yd; 3 ft'.

 

I'm not sure how to identify which is more precise. Help?

Answer 1

Because it takes several measures in feet to equal 1 yard, we can say that

 

3ft is more precise than 1 yard.

 

 

1 ft + 1 ft + 1 ft = 1 yd

Answer 2

Accuracy is how close a measured value is to the actual (true) value.

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

 

In math, 1 yd equals 3 ft.  As stated, the measurements are exactly the same (by definition).

 

When you measure something, for example lines on a football field, there will be some error.  What you think is 100 yds from goal line to goal line might actually be 99.99 yards.  I couldn't tell from the stands and this has nothing to do with Deflategate.

 

So, if you said that a football field is 100 yards or 300 feet, those are precise, but may not be accurate (if the field is not that length).