Question

question 2 1 p arnold and libby (1949) dated a tree ring using 14c dating methods. they found the following dates for their tree ring: 1100, 1152, 1134, and 1108 years old, however, the tree ring was actually 1372 years old. their measurements had: ○ high precision and low accuracy ○ low precision and high accuracy ○ high precision and high accuracy

Explanation:

1. First, recall the definitions: Precision refers to how close the measured values are to each other. Accuracy refers to how close the measured values are to the true value.
2. Calculate the differences between the measured values: The measured values are 1100, 1152, 1134, 1108. The range (a measure of precision) is \(1152 - 1100 = 52\), and the values are relatively close to each other, so precision is high.
3. Now, check accuracy: The true value is 1372. The measured values are all much lower than 1372 (e.g., \(1372 - 1100 = 272\), \(1372 - 1152 = 220\), etc.), so the measured values are far from the true value, meaning accuracy is low.

Answer:

A. high precision and low accuracy