Question

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 the sample size (from 6 to 12 cups) improves the reliability of results as a larger sample better represents the population.
• Using more legible handwriting ensures data is accurately recorded and can be easily interpreted later.
• Precise digital thermometers and scales (measuring to the hundredth of a gram) reduce measurement errors, leading to more accurate data.
• Reducing the sample size would make results less reliable.

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.