What is calibration? How many type of calibration is there? How can you calculate variance?

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Calibration is the process of comparing measurements of an instrument or device to a known standard to ensure accuracy. There are two types of calibration: internal and external. Variance can be calculated by finding the average of the squared differences between each data point and the mean.

Calibration is the process of adjusting or determining the accuracy of an instrument or device by comparing its measurements to a known standard.
There are two types of calibration: internal calibration, which is done using built-in reference standards within the device, and external calibration, which involves comparing the device's measurements to an external standard.
Variance can be calculated by finding the average of the squared differences between each data point and the mean. This helps to measure the spread of data points around the mean.
For example, in quality control, calibration of measuring instruments like thermometers or scales is crucial to ensure accurate and consistent results.

What is calibration? How many type of calibration is there? How can you calculate variance?

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