Any single observation may or may not be accurate. If you compare observations you can reduce the chance of observational error.
The larger the sample, the lower the % error.. so to reduce a % error, increase your sample size.
Systematic error is the result of complete equilibrium. The method to reduce systematic error is to introduce a proof that demonstrates the group has error in their consensus.
how to reduce the problem of random error and systematic error while doing an experiment
take reading 4 to 5 times, and take its average this will reduce error
to reduce error
It should reduce the sample error.
Increase sample size.
You can overcome or reduce the problem of random error and systematic error while doing an experiment by increasing the sample size, which means averaging over a huge number of observations.
Only to modify error behavior, not the error causing situation
Increase n or sample size.
In painting, yes. But a drawing can also be observational.