Determine whether the data described are at the interval level or the ratio level.

Question

The weight of a sack of potatoes.

Answer 1

The weight of a sack of potatoes is measured at the ratio level.

This is because:

• There is a true zero point (a weight of zero means there is no sack of potatoes).
• Ratios can be formed (for example, a sack weighing 10 kg is twice as heavy as a sack weighing 5 kg).
• It possesses all the properties of the interval level (ordered, equal intervals), but also has the additional property of a true zero, which is why it is classified as ratio.