What does it mean to be precise in chemistry?

Key Points. Accuracy refers to how closely the measured value of a quantity corresponds to its “true” value. Precision expresses the degree of reproducibility or agreement between repeated measurements. The more measurements you make and the better the precision, the smaller the error will be.

How do you use precise?

You say ‘to be precise’ to indicate that you are giving more detailed or accurate information than you have just given. More than a week ago, Thursday evening to be precise, she was at her evening class. The restaurant in which we ate that night had more people in it at 11pm, 51 more to be precise, than it did at 10pm.

Which data is more reliable and why?

Answer: Primary data are more reliable than secondary data. It is because primary data are collected by doing original research and not through secondary sources that may subject to some errors or discrepancies and may even contain out-dated information.

How is an experiment accurate?

When a scientist repeats an experiment with a different group of people or a different batch of the same chemicals and gets very similar results then those results are said to be reliable. Reliability is measured by a percentage – if you get exactly the same results every time then they are 100% reliable.

How can you improve accuracy?

The best way to improve accuracy is to do the following:

  1. Read text and dictate it in any document. This can be any text, such as a newspaper article.
  2. Make corrections to the text by voice. For more information, see Correcting your dictation.
  3. Run Accuracy Tuning. For more information, see About Accuracy Tuning.

What does it mean to be precise but not accurate?

Accuracy refers to how close a measurement is to the true or accepted value. Precision refers to how close measurements of the same item are to each other. Precision is independent of accuracy. If all of the darts land very close together, but far from the bulls-eye, there is precision, but not accuracy (SF Fig.

How do you use reconsider in a sentence?

Examples of reconsider in a Sentence She refused to reconsider her decision not to loan us the money. Local opposition has forced the company to reconsider building a new warehouse here. We hope you will reconsider.

How do you improve the accuracy of an experiment?

Accuracy can be improved by using a syringe to measure liquids rather than a measuring cylinder. Reliability can be improved by completing each temperature more than once and calculating an average.