Edexcel A-Level Physics Arithmetic Means

Review arithmetic means in Edexcel A-Level Physics through repeated readings, mean periods, measured dimensions and mark-scheme rounding rules.

Exam points

calculate a mean from all valid repeated readings before converting totals such as 10T or 5T
round the final mean to the required decimal places, significant figures and physical unit

[Maximum number: 2]

A student investigated the properties of a spring using the apparatus shown.

Figure for Question C.1.2—Arithmetic means question 1 — Edexcel A-Level Physics A2

The student determined the time period T of the oscillations of the mass-spring system.

The student displaced the mass downwards. He released the mass so that the mass oscillated vertically. He used a stopwatch to measure the time for multiple oscillations.

The student recorded the following results.

Table for Question C.1.2—Arithmetic means question 1 — Edexcel A-Level Physics A2

Calculate the mean value of T.

Mean value of T =

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C.1.2—Arithmetic means question 1