Question

you are doing an experiment which measures the effect of a change in temperature on heart rate. which of the following practices negatively affect(s) the precision and accuracy of scientific data? select all that apply. using only one subject to obtain your data doing only one trial with multiple subjects estimating the change in temperature using a thermometer that measures in celsius

Explanation:

• Using only one subject may not represent the general population, reducing data accuracy and precision.
• One - trial with multiple subjects lacks replication, which is crucial for reliable data.
• Estimating temperature change instead of measuring precisely affects accuracy.
• Using a Celsius - measuring thermometer is a standard and proper practice, not a negative one.

Answer:

Using only one subject to obtain your data, Doing only one trial with multiple subjects, Estimating the change in temperature