Asked Sep 5, 2019

How do I determine which value is the most precise and which value is the most accurate when given 4 values to choose from and one reliable measurement?



Expert Answer

Step 1

In chemistry, there are many ways to check the deviation of experimental data from the accurate value. These different methods provide the difference between accuracy and precisions of the experimental data which can be further used to calculate the error percentage in the experiment.

Step 2

Precision in any experimental data indicates how close the values are with each other. For example, if student A and B have set of 4 experimental data as given below;


Image Transcriptionclose

А 3 5.2, 5.3, 5.1, 5.0 B 4.9, 5.2, 5.4, 5.5

Step 3

Here student A has more precise experimental data compare to B as the values ar...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Scientific Measurement

Related Chemistry Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: The normal freezing point of ethanol (CH3CH2OH) is -117.30 °C and its Kfpvalue is 1.99 °C/m. A nonvo...

A: It is well known that if in a solvent, a non-volatile solute is dissolved, the freezing point of the...


Q: Convert kcal to mcal

A: 1 kcal = 10^3 cal 1 mcal = 10^(-3) cal


Q: I've tried this question three times and im having a difficult time with it   A balloon is filled wi...

A: Density and volume are inversely proportional when mass is kept constant.


Q: (b) 0.00031 (c) 0.425 (d) 70.80 °COca= 3.1x lo 254.510 5. How many significant figures are reported ...

A: (a)Significant figure is a non-zero number and zero placed in between non-zero numbers is significan...


Q: what is the number of significant figures in eacch of the following measuredments quantities: a  351...

A: We have to determine the number of significant figures in the given measured quantities-351 g0100 mL...


Q: How many grams of boric acid, B(OH)3 (FW 61.83), should be used to make 2.50 L of 0.4300 M solution?

A: Molarity can be calculated using following equation.


Q: A _____ is something that has a definite composition.

A: The study of the composition, structure and characteristics of matter; the processes which matter is...


Q: Potassium ion concentration in the interstitial fluid is 5 mEq/L. What milligrams percent concentrat...

A: The term milliequivalent refers to the one thousandth of a chemical equivalent (equivalent weight) o...


Q: You are to prepare about 1 L of a solution which contains approximately 0.100 mole NaOH per liter. B...

A: The solution of sodium hydroxide that is prepared is one liter, which contains 0.100 mole of sodium ...