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考纲要点

Q2 作图与分析考纲要求​

Paper 5 Q2 测试考生处理实验数据的能力，包括作图、误差分析和从图中求常数。

Part (c)(i): Plotting the Graph（2 分）​

  • M1: All points plotted correctly within half a small square
  • M1: Error bars plotted correctly in Y-direction, symmetrical, all points

Part (c)(ii): Drawing Lines（2 分）​

  • M1: Straight line of best fit drawn (equal distribution of points above and below)
  • M1: Worst acceptable straight line drawn (steepest or shallowest through all error bars)

Part (c)(iii): Gradient Determination（2 分）​

  • M1: Correct gradient of best fit line
  • M1: Correct absolute uncertainty in gradient

Part (c)(iv): y-intercept Determination（1–2 分）​

  • M1: Correct y-intercept with unit
  • M1: Correct uncertainty in y-intercept (if required)

评分总览​

Part内容分值
(c)(i)Plot points + error bars2
(c)(ii)Best fit + worst acceptable lines2
(c)(iii)Gradient + uncertainty2
(c)(iv)y-intercept (+ uncertainty)1–2
Total7–8