Question

Sort the following errors as either systematic, random, or both.

Answer 1

Answer:

Explanation:

1.Assume you are measuring a height of a man using measuring tape,you measure height 5.5 feet but actually the height of man is 5.3 feet,this happens because of instrument.The measuring tape becomes expanded or slightly stretched over the years this cause "systematic error",the error associated with faulty equipment.

2.Random error is unsystematic or random variation,suppose in measuring height first time you measured 5.3 feet,second time you measured 5.4 and third time you measured 5.2 feet.This does not happened due to instrument,it is unavoidable.

3. Suppose we measure a height of a person with tared instrument and we get different reading during random reading, it gives us both error.

Answer 2

Assuming that this is the full question :

1. A 50.0-mL transfer pipet always delivers 50.045±0.004 mL. 

2. A 50.0-mL buret delivers 1.94±0.01 mL when drained from exactly 1 to 3 mL, and delivers 2.02±0.01 when drained from exactly 3 to 5 mL. 

3. A 5.0-mL buret when drained from 0 to 2 mL delivered 2.03 mL. The next time when drained from 0 to 2 mL delivered 1.98 mL. 

4. The percent transmittanced of the same solution is measured as 66.5%, 66.3%, 66.2%, and 66.5%.

statement no 1 and 2 are both systematic and random while statement 3 and 4 are random.