Question

improving the experimental design. which are ways to improve the design of this experiment? check all that apply. reduce the sample size so the experiment can be done faster. increase the sample size from 6 cups to 12 cups of sand and water. use more legible handwriting when recording data. use more precise digital thermometers. use more precise scales that measure to the hundredth of a gram.

Explanation:

Increasing sample size improves accuracy and reliability. Using more precise measuring instruments (digital thermometers, precise scales) reduces measurement errors. Legible handwriting helps in data - recording accuracy. Reducing sample size generally decreases accuracy.

Answer:

• Increase the sample size from 6 cups to 12 cups of sand and water.
• Use more legible handwriting when recording data.
• Use more precise digital thermometers.
• Use more precise scales that measure to the hundredth of a gram.