Edexcel A-Level Physics A2 C 1 2 Arithmetic Means Questions
Review arithmetic means in Edexcel A-Level Physics through repeated readings, mean periods, measured dimensions and mark-scheme rounding rules.
Syllabus
Pearson Edexcel International Advanced Subsidiary/Advanced Level
Course
Physics XPH11/YPH11
Level
A2
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
Edexcel A-Level Physics A2 C 1 2 Arithmetic Means Questions question 1
[Maximum number: 2]
A student investigated the properties of a spring using the apparatus shown.
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.
Calculate the mean value of T.
Mean value of T =
Calculate the mean time for 10T using all values. Mean 10T = (6.88 + 6.93 + 6.84 + 6.96) s / 4 = 6.90 s. Mean T = 6.90/10 = 0.69 s, given to 2 d.p. only.