Working as a Physicist - General questions

Criticise the recording of data:

the student did not record to a consistent number of decimal places

the student did not record to a proper resultion

Why would a datalogger be suitable to collect data in an investigation?

The data has to be collected over a long period of time

collect precisely over set intervals

Accuracy Definition

When a measurement is close to the true value

Precision definition

a measure of the consistency of values obtained by repeated measurements

state why a recording of 45.043mm with a micrometre could not be justified

as there will be variations in positioning of micrometre

variations in the length of the tube

Describe the procedure to determine an accurate value for the external diameter of the tube

take multiple readings

at different positions

at different angles

calculate the mean

State the purpose of calculating a mean

t

systematic error definition

errors such as zero error, parallax error