Error in chemical analysis

Usage of term error is uncertaintly in measurement.

• Yes

• No

There are three types of systematic errors. Find the correct answer.

• Gross errors

• Personal errors

• Random errors

If the measured value is the average of several measurements, the error is called the....

• Mean Error

• Random Error

• Systematic Error

• Absolute Error

Accuracy is the closeness of the experimental value to the true value. So, arrange the correct accuracy present following the diagram given.

• High accuracy, high accuracy, low accuracy, low accuracy

• Low accuracy, high accuracy, high accuracy, low accuracy

• High accuracy, low accuracy, high accuracy, low accuracy

• Low accuracy, low accuracy, high accuracy, high accuracy

What is the minimization of the errors?

• The average of the several measurements

• Standard addition method

• Minimized by exercising care and self-discipline

• Calibration of the equipment and application of correction factor

Which error occur result of human error and lead to outliers?

• 
• 
• 

Precision is the closeness measurement from another one and it's also......

• Depends on person measurement

• Closeness of the experimental value to the true value

• Reproducibility of measurement

• Resolved through calibration of equipment

The _________ measurement is the absolute error divided by the true

value.

• Relative Error

• Random Error

• Accuracy Error

• Systematic Error

Which statement true about instrument errors?

• Errors of these types usually are detectable and correctable

• Difficult to detect and hence, these

  errors are usually the most difficult to identify and correct

• Many measurements require personal judgments.

• The presence of interfering contaminants in the sample

Amount of the determined standard added to the sample which is analyze total amount of constituents present. Know as __________

• Types of errors in data

• Error

• Accuracy and precious

• Minimization of the errors